The vast majority of media, commentators and fans are always focused on the big picture and always ignore the details.

In fact, it is often the details that determine the outcome of a football match.

For example, in the first derby of the century last season, Yang Yang's direct free kick.

It was a very inconspicuous foul, if there was no direct free kick, it is estimated that no one would care about that foul at all, but it was such an inattentive detail that led to Yang Yang getting a direct free kick opportunity, which led to Real Madrid scoring first, and then Barcelona lost consecutive goals and turned into a rout.

On the other hand, if there was no foul, Yang Yang couldn't score a free kick, would Real Madrid still be able to win?

No one will ever know the answer, but Yang Yang himself guessed that it should still be half to half.

In fact, Real Madrid's opening tactics at that time had failed, but Barcelona's attack had the advantage, with the situation of almost attacking at that time, who could guarantee that Real Madrid's weak defense would not make mistakes?

So, sometimes, football games are like that, it's made up of a bunch of inconspicuous details.

It's like tonight, after walking into the Camp Nou and stepping on the turf of the Camp Nou amid the boos in the sky, Yang Yang's first reaction was slippery, and then he shook his head with Benitez and Yesterdam on the sidelines.

The Real Madrid coaching staff also came up to try the turf at the Camp Nou, which was wet, which was very bad for Real Madrid.

The slippery turf will lead to more mistakes on both sides, but it will also make the ball faster with short passes close to the ground, which is very beneficial for Barcelona, who are good at passing and controlling the ball.

For example, many fans are talking about the fact that when Mourinho was in charge of Chelsea, he deliberately threw sand at Stamford Bridge in order to play Barcelona in the Champions League.

Quite simply, because there is too much sand, it will affect the speed of the ball, which in turn will affect the success rate of short passes close to the ground.

Of course, Barcelona beat Chelsea 2-1 in that game, so it looks more like a joke, but in fact, in almost all football matches, the home team will try to make a fuss.

If there is no rain, Barcelona will definitely sprinkle water before the game, but the degree will not have such a good effect as rain.

It's really God helping Barcelona!

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Real Madrid entered training 20 minutes earlier than Barcelona.

The content of the pre-competition training is generally not a big deal, and it is basically some warm-up items.

And an hour before the game, the two sides officially announced the starting lineups.

Barcelona still adopts the four-three-three formation that they are good at.

The goalkeeper is Bardas, the backline is Abidal, Pique, Puyol and Alves, the midfield is followed by Sergio Busquets, Andres Iniesta and Xavi are in the middle, and the front is a combination of Villa, Messi and Pedro.

This is a set of striker formation, Messi is in the middle, can either rush forward or retreat, this season Barcelona's style of play is very popular, Messi's position is erratic, you can go up and down the middle, you can also pull to the side, and the Argentine superstar's ability to run without the ball is also a must, quite a headache.

Of course, generally speaking, adopting a non-striker formation basically means that Barcelona still has to continue to play their own set of pass-and-possession ground penetration play, which is what Barcelona is best at.

Real Madrid also adopts the two-back midfield formation that Benitez is best at, with Casillas in goal, Maxwell, Pepe, Ramos and McCone in the back, Mascherano and Xavi Alonso in the back, Kaka in the middle, and David Silva, Ibrahimovic and Robben in the front.

One of the big changes was the appearance of David Silva in the starting line-up, which caused a lot of surprise within Real Madrid, mainly because of what role David Silva would play on the pitch.

Rafa Benitez will be hoping he can get back closer to midfield and give the midfielders more opportunities to pick up and play the ball, and he plays in Valencia himself as a left-sided midfielder, an area where he excels.

Real Madrid's intentions are also very clear, quickly passing through the midfield when counterattacking, directly looking for Ibrahimovic, giving full play to Robben's speed, and Kaka playing the role of the second echelon attacker who is inserted later.

What's more, David Silva's retreat can effectively protect Maxwell behind him and share the defensive pressure from Alves.

Replacing Marcelo with Maxwell, what Benitez wants is naturally a more solid defense.

In fact, Benitez once wanted to use Arbeloa to play on the left side, but considering that Messi is in the middle, Pedro is more good at running without the ball, and the threat of cutting inside is far less than Messi who plays right winger with the opposite foot, but Alves's role is getting bigger and bigger, and he has almost become the most powerful starting point for Barcelona's attack.

Therefore, Benitez still opted for Maxwell with his left foot.

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It's raining again!

Yang Yang sat on the bench, wearing a long-sleeved jacket, watching the two teams on the pitch, Barcelona still wearing their home shirts, and Real Madrid wearing white jerseys.

The referee of this match, Ituralde, is a 43-year-old international referee with a lot of experience in law enforcement.

After the whistle blew, the game officially began.

Boos and cheers filled the sky over the Camp Nou.

Real Madrid kicked off the ball first and quickly passed it back to the backline.

Soon, Ramos in the backfield of Real Madrid made a direct long pass and sent the ball to the front.

Ibrahimovic grabbed the first spot and headed the ball down the right.

Robben shook off Abidal on the right and crossed back to the middle, where Kaka got a nice feint before receiving the ball and fooled Sergio Busquets before sending the ball back to Robben's feet.

The Dutchman ran out of space and crossed diagonally behind him to find Ibrahimovic, only to be tripped by the onrushing Abidal.

Ibrahimovic couldn't get the ball from Puyol and Pique's left and right pinch, but the referee blew the whistle for a foul on Abidal and the game was only 10 seconds into the game.

Abidal was warned that Real Madrid were given a set-piece from the right and Ibrahimovic fired his first shot of the game wide of the game, but it was a bit off the mark.

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With the start of the game, Yang Yang was also gradually observing the arrangement of the opposing sides.

Pep Guardiola obviously knows that Real Madrid will still focus on defensive counterattacks in tonight's game, so he decisively took the defensive front pressure and hoarded heavy troops in the midfield, and the main battlefield of the two sides is still on the middle line of Real Madrid's half.

Barcelona looked like four, three, three, but in reality, Alves was very far up front, more like a wing-back, or even a winger, which made David Silva have to drop back more to participate in the defense.

Yang Yang also began to understand Benitez's calculations, he couldn't play, although Di Maria was fast enough, his willingness to press and retreat to defend was not as good as David Silva, and David Silva had a strong ability to take and play the ball under pressure.

Busquets still acts as the team's organizational core, Messi actively retreats, and Barcelona's possession is basically with these two as the front and back points, with Xavi and Iniesta as the sides, forming a pass-and-possession phalanx.

When Messi retreats, Pedro on the right side will take the initiative to move forward and directly suppress the Real Madrid backline, facing Pepe and Maxwell, at this time Alves will definitely go forward and occupy the winger area left by Pedro.

Real Madrid is obviously aware of this, and Benitez asked David Silva to follow actively, otherwise, Alves will be able to quickly form a combination with Pedro and Messi in this area, create a numerical advantage, and play gaps.

In order to curb the attack of Barcelona's right and right ribs, Real Madrid's defense also had to lean to his left side, and Yang Yang noticed at this time that Villa's position has always been in the left rib area at the front of the penalty area, patiently waiting for opportunities.

Andres Iniesta is at the back, but also in this area.

Obviously, as soon as the ball is passed from the right side to the left, the two can quickly form a link-up.

However, Real Madrid also left McCone and Xavi Alonso on this side, plus Barcelona is more inclined to attack the ribs, but the left wingback Abidal's wing attacking ability is not excellent, and he needs to be afraid of the fast Robben, so the defensive pressure is not great.

The role of Mascherano and Xavi Alonso in the back is evident when Barcelona pass possession, moving their position with the area where the ball is located, maximising the protection of the defence and strengthening the defence.

In the second game of last season, Real Madrid used a back three to play, and the defensive effect on the ribs was very obvious.

After a year and a half of polishing and tuning, Real Madrid's regional marking defense system has been formed, no matter how Barcelona passes and cuts and how to cross positions, Real Madrid's defense can effectively contain the space and not give the opponent a chance.

Barcelona seemed to be in control of the ball, but in fact they really got very few opportunities to shoot from their feet, and they were obviously very uncomfortable with Real Madrid's pressing and pressing, especially in the fifteenth minute, after Real Madrid broke the ball, it was handed over to McCone on the right.

The Brazilian right wing-back dribbled forward at high speed, advanced to the edge of the box, and fired a volley at Pique, before Kaka volleyed a shot that was saved by goalkeeper Valdés.

Barcelona's first shot came in the 18th minute from a corner, when Pique headed in Pepe but couldn't threaten and went just wide.

In the nearly 20 minutes ahead, Barcelona had 70 percent possession, while Real Madrid only had about 30 percent, but the number of shots on goal was three to one, and Real Madrid's defense still looked tighter.

Benitez's training over the past year and a half, especially on the defensive end, has been quite successful.

Although Yang Yang was sitting on the sidelines, he was fortunate to witness the battle of wits between the two world's top coaches, and he felt that he benefited a lot and admired it very much.

Both teams have a strong margin for error, with Barcelona relying on their strong passing ability and high pressing ability, while Real Madrid rely on the teamwork of players with a tight overall defensive system.

And it's all based on a wide range of runs.

This should be why Benitez said before the game that the players would fight until 70 minutes of exhaustion and cramps.