Jia Dai, whose real name is Ren Jiazhong, was born in 1963. Jia Dai was born in a compound in the east of Jiu Si City, perhaps because he came from a military family, so after leaving school, Jia Dai naturally became a soldier brother.

After three years as a soldier, Jia Dai was assigned to a unit in 49 cities and became an ordinary clerk.

Nickname source:

As for how the nickname "Big Brother Jia Dai" came from, it is because these prominent people who came down from 49 cities to Shenzhen, in the spirit of reunion and warmth, thought of setting up a chamber of commerce in Shenzhen. Many people make light work. But then again, what?

You don't have to have a leader. How can a group of dragons have no leader? So these outstanding people get together. After discussion, everyone thinks that Jia Dai has a wide network of contacts and outstanding ability in Shenzhen, and is the only candidate for the president of this Chamber of Commerce.

Therefore, everyone suggested that Canada be the president of the Chamber of Commerce, but Jia Dai, a modest and low-key eldest brother, refused, saying that he was young and lacked social experience and was not suitable for being the president of this Chamber of Commerce.

No one said anything about Jia Dai's refusal, and said that the position of president of the Chamber of Commerce was not suitable for anyone except Jia Dai. Brother Jia Dai had no choice but to agree to everyone's request, and Jia Dai only promised to be acting president. From then on, Jia Dai's name was called away by everyone, so that everyone forgot Jia Dai's original name, Ren Jiazhong.