What does official litigation mean?

An official complaint is to be arrested to see an official and go to jail.

Go to prison, a verb, means to go to prison for breaking the law.

Title: Prison. Pinyin: Zuluo

Basic explanation

[going to jail; Imprisoned] or imprisoned.

What did he go to prison for?

detailed description

In prison.

"Water Margin" 49: "Uncle went to jail for us, and then no one sent food to save you." The first chapter of Ouyang Shan's Gao Qian: "We don't pay for food, we are just beaten and imprisoned, and nothing else."