Yihenxi

#PI If you're bored, you can go play with the chickens.

#PI If you don't think it's good, don't talk nonsense, damn it.

#PI It takes an hour to climb up the Empire State Building, but only 8.8 seconds to jump down. What about the opposite? After falling for more than a month, how long will it take to rise?

#PI just say whether it's stable or not [龇牙]

#PI Pretend to be confused with full knowledge