There is a pig weighing 400 Jin and a bridge bearing 200 Jin. How did the pig cross the bridge?

Method 1: Maybe this pig is called "400 kg", but its own weight does not reach 200 kg, so it can cross the bridge safely.

Method 2: starve it for a month, and you can cross the bridge when your weight drops below 200 kg.

Method 3: Spend some money to ask experts to report that the bridge bears 400 Jin, and then Lou Zhu can boldly cross the bridge.

Method 4: Drain the water from the pig, and the weight of the pig can be reduced to less than 200 kg. After crossing the bridge correctly, inject water again.

Method 5: Lou pigs don't need wings. When the bridge is windy, Lou pig can fly when standing on the tuyere, because some people say that "pigs can fly when standing on the tuyere".

Extended data

Brainstorming questions:

1, brain teaser topic: Mao Mao said: 10+4 = 2, and the teacher is right, why? Brainstorm answer: 10 +4 = 2 pm

2, brain teaser topic: Ming Ming is a nearsighted and notoriously greedy boy. Put a pile of books in front of him and an apple behind the book. What do you think he will read first? Brainstorm answer: I can't see anything.

3. Brainstorm question: What is the longest car in the world except the train? Brain teaser answer: traffic jam

4. Brainstorming question: Who is the most common person on Nanjing Road in Shanghai? Brainstorm answer: China people.

5, brain teaser: three gold "Xin", three water called "Miao", three people called "Zhong", so what should the three ghosts be called? Brainstorm answer: Call for help.