Joke Collection Website - Cold jokes - What is the cold joke told by the Monkey King and Kaiōshin?

What is the cold joke told by the Monkey King and Kaiōshin?

recently

Kaiōshin received a letter from Bouo, which only wrote

" qs-IHS-IN "

In the past two days, top cryptographers have been fighting day and night, but they have not been able to crack it.

So I turned to the Monkey King for help and got a reply soon.

"You took the letter backwards."