"This is almost an unsolvable doubt, if it is a small area of disappearing footprints, then maybe the answer can be found, the problem is that there are no footprints in a large area around the entire dead mound, and now except for Yingfeng who flew here, or teleported over, I really can't think of any other way." Teacher Jin said.

"There must be other ways, it's just that we haven't thought of it yet, there must be!" Xu Tian insisted and said.

"So did you untie it? If you were Yingfeng, what method would you use not to leave footprints in the surrounding snow? Teacher Jin said.

"If it's me?" Xu Tian was speechless when asked by Teacher Jin, because Xu Tian hadn't thought of an answer this time.

I saw Yingfeng at Yingfeng's house this afternoon, and it has not snowed since Yingfeng's house left, so no matter which direction Yingfeng comes to the Dead Man's Grave, she will definitely leave footprints in the snow, even if Yingfeng uses some kind of sliding tool, there will be no traces on the snow.

This unsolvable problem made Xu Tian feel a headache, this problem was like trapping Xu Tian in a labyrinth with no exit, because Xu Tian couldn't think of where the exit of this labyrinth was in his heart.

If it is a problem encountered in the past, Xu Tian will have a trace of expectation when looking at the problem, because no matter whether Xu Tian has solved the answer to the previous problem, Xu Tian will know that there must be an answer to the problem in the past.

But this time is different, Xu Tian already thinks that there is no answer to this difficult problem in his heart, so Xu Tian's entire thinking process seems meaningless, because the process of solving this difficult problem can only be like what Teacher Jin said, Ying Feng used supernatural factors to come to the dead man's grave.

Xu Tian doesn't believe that there are supernatural factors in this world, this must not be the answer, even if Xu Tian has not solved this problem for the time being, Xu Tian is not willing to believe in using supernatural factors to solve this problem.

"There is a way to solve it, there must be!" Xu Tian kept repeating this sentence in his mind.

But what's the solution? How do you make sure that you don't leave footprints in the snow and don't show up in the grave of the dead?

By the way, Xu Tian suddenly thought of a word, that is, "appeared", when was Yingfeng seen? Xu Tian remembered that at that time, he was just approaching the Dead Man's Grave, Yingfeng was burning paper near the Dead Man's Grave, at that time Xu Tian and Teacher Jin were about two hundred meters away from Yingfeng, Xu Tian could only see a figure squatting in the place where the paper was burned, and he didn't see what the figure looked like at all.

When Xu Tian and Teacher Jin walked quickly towards the figure, the figure stood up.

Teacher Jin...... Maybe I've found the answer! Xu Tian said.

"What is it? How exactly did Yingfeng do it? Teacher Jin asked.

"We were negligent, remember? When we just saw someone burning paper in front of us, we were about 200 meters away from the paper burning place, and we vaguely saw a person squatting there, so we walked quickly in that direction. Xu Tian said.

"What do you want to say? Did we ignore the ground at the time? Teacher Jin asked.

"That's right, at that time, we were anxious to know who the man who was squatting two hundred meters in front of us was, and we were both very anxious when we walked forward, and we didn't even notice the snow under our feet at that time." Xu Tian said.