In the early Spring and Autumn Period, there was a man named Deng in the state of Zheng, who was specialized in helping people with lawsuits. In small cases, people need a dress. In big cases, people need a pair of trousers as a reward. They teach people to "distinguish right from wrong". If the client wants to win the lawsuit, he can win it, and if he wants people to be convicted, he can also discredit them. Make Zheng "right and wrong are excessive and changeable." Zheng's attending doctor Zi Chan killed Deng. As a result, Zheng "served the people, determined right and wrong, and enforced the law."
If what Lu Chunqiu said is true, then Zi Chan came to power in 543 BC and died in 522 BC, then Deng's activities and executions should be in this period. At that time, on the other side of the world, in Athens, Europe, no one provided paid legal services like Deng Xi. At that time, Rome had not promulgated statute law, and there was no such business as helping people to go to court. So Deng can be regarded as the earliest practicing lawyer in the world.