Is Beijing Zheng Aili a truly righteous lawyer, or is he promoting himself?

Yes, it's not.

1. Zheng Aili, one of the top ten lawyers in Beijing and a senior lawyer in China. He started working as a lawyer in 1985 and has served as legal counsel for hundreds of large companies.

2. It’s not hype. Attorney Zheng Aili is a senior consultant on many government and military projects and is good at handling various difficult cases.