Compared with before, it is much easier for Wenlong, who has a hot air balloon, to find Lily.

Go straight out of the city, and then get on the hot air balloon, and fly in the direction of the thundering sand sea.

However, the wind near the Thundering Sand Sea has always been very strong, and it is not easy to fly in such a harsh environment, but if you can be familiar with the direction of the air flow near the Thundering Sand Sea, then it is also possible to turn the disadvantage into an advantage, and make reasonable use of the air flow to increase the flight speed of the hot air balloon.

After all, this hot air balloon has no more active power equipment than a small propeller that can provide thrust. Therefore, most of the time, if you want to reach your destination as quickly as possible, you need to take advantage of the flow of air currents in the sky.

Obviously, because she often travels to and from various parts of the mainland in a hot air balloon to conduct investigations, Lindis has good experience in this area, and she is quite handy at maneuvering hot air balloons.

"Sister Lindis didn't expect you to be so good at manipulating hot air balloons...... I thought that a place as big as the thundering sand and sea breeze was not suitable for a hot air balloon flight......" Catherine said admiringly.

"Hmph, I'm not just reading and doing research...... Lyndis said with a smile as she adjusted the altitude of the hot air balloon, "Although the wind in the thundering sand sea is indeed very strong, it doesn't mean that the airflow is the same at all altitudes...... As long as these air currents are used reasonably, they can achieve twice the flight efficiency with half the effort......"

"Huh? Is that so? I hadn't noticed it before......" Catherine said confusedly.

"Haha, that's because you haven't cared about this kind of thing, Sister Catherine," Lyndis continued with a smile. "It's not just the intensity of the air flow that varies at different altitudes. Even the direction of the airflow will vary. ”

"The direction will be different, too?" Catherine continued to ask curiously.

"Hmm...... In a way. The flow of air currents is somewhat similar to the flow of ocean currents and is stratified. In some places, the wind is calm on the surface, but there is an undercurrent surging under the surface, while in other places it is the opposite, the current seems to be intense, but in the deeper places the current is quite gentle, and in other places, the upper current flows from north to south and the lower current flows from south to north, thus forming a convection current...... Similar to the flow of water. The same situation often occurs in the flow of air, so as long as you grasp these changes in air flow at different altitudes, you can reasonably control the flight of the hot air balloon......"

"I see......," Catherine nodded.

"Look, there's someone down there!"

Just as Catherine sighed, suddenly Begonia, who was in charge of observation, shouted loudly.

"Someone? Meow? ”

Hearing the sound of the begonia, Wen Long also walked to the edge of the hanging basket, and then looked down, and sure enough, he found that there were human figures below, and on the side of those human beings, Wen Long also saw a flying dragon monster with a brown and yellow color and a little cyan and a sand thunderbird corpse.

"Something is wrong...... Lower the height! Meow! "See this scene. Wen Long immediately ordered loudly.

"Understood!"

After receiving Wenlong's order, Lindis also immediately stopped the heating stove. At the same time, the valve is opened and the gas inside the balloon is reduced in a controlled manner.

In this way, the hot air balloon began to make an emergency descent at a much faster rate than usual, and as the altitude got lower and lower, the situation on the ground became more and more visible.

The humans on the ground were the Lily and the others that Wenlong and the others were looking for, and at this time, a total of three people, including Lily, were fighting against the brown and yellow monster's Wyvern monster!

However, judging from the battle scene, it seems that even if the strength of Lily, Elan, and Hefei was gathered, they did not take any advantage from that monster, but were suppressed by the brown and yellow Wyvern monster, only having the strength to defend, and almost lost the power to fight back.

"Yike...... What kind of monster is that, that feels a bit like the Tyrannosaurus we hunted before? Catherine, who had never seen such a monster before, was the first to exclaim.

"That's the dragon...... Unlike usual, this time Catherine was not Wenlong or Lindis, who was a bachelor of the king, but Begonia, who usually didn't like to talk.

"Boom Dragon?"

"Boom Dragon is a monster that is related to Tyrannosaurus, it is generally believed that Tyrannosaurus is the ancestor of Boom Dragon, Boom Dragon evolved from Tyrannosaurus, in which Tyrannosaurus spikes evolved into Boom Dragon's blade armor and scales, and at the same time, Boom Dragon in order to obtain a certain flight ability, the body shape has become more short and lean, and also evolved a wing membrane suitable for flight in the position of the forearm, which can be used for short-distance flight, in order to facilitate predation in complex terrain...... "At this time, Wen Long also explained.

"No wonder it always feels like it...... Especially if you remove the fangs of the Tyrannosaurus, and look at the heads of the two even more similar......" Catherine sighed again.

At this time, Begonia was silent.

Begonia thought of her father, and Begonia remembered that her father had lost a leg because of the counterattack of the Boom when he was hunting dragons, so he gradually became depressed and became drunk all day long.

Although because of Wenlong's help, Begonia's father gradually got out of the depression of the past, but for the monster of the dragon, Begonia still has a desire to take revenge.

So, before the hot air balloon was lowered to a safe height, Begonia had already climbed to the edge of the hanging basket, and then jumped down.

"Ah, little begonia......" Seeing Begonia jumping down, Catherine also exclaimed.

"Don't be nervous, the little girl knows how to measure...... We don't have to meddle in this...... Meow ......" In contrast, Wenlong seemed to be very calm, as if everything was under control.

Because Wenlong has investigated the matter of Begonia's father, he also knows why Begonia is so excited to see the dragon, and Wenlong knows better that after the battle with the dragon, the current Begonia is completely able to hunt the dragon......

Wen Long knew that although the Boom Dragon and the Tyrannosaurus had a certain blood relationship, in terms of strength, the two could not be the same.

In other words, the dragon is actually a tyrannosaurus that gradually adapted to the existence of the local environment after migrating to a relatively comfortable environment, and this adaptation is not stronger, but weaker. (To be continued.) )