July 10 How did Peng Deming escape from the water tank?

First, after being locked up, he was carried behind the water tank, and no one could see him. At this time, his right handcuffs have been loosened, and his left hand holds the right handcuffs, and the person behind the water tank helps him. Secondly, there is not enough water in the water tank to breathe. After the white cloth is pulled, it is quickly pulled away, indicating that his right hand has escaped, which is to ensure his safety. Then the white cloth was pulled for a long time. Because he had to get out with the help of others, he did it under the water tank. So there is no water, and he needs to refill it, which takes time. So it didn't take long for the white cloth to come out from another place. He went out by ladder in the last semi-final, and this time it was very simple. Give more points after revealing the secret.