The main reason is that Paul's English name is paul, which has a similar pronunciation to "Pao", so he was given the nickname.

Chris Paul (Chris Paul), born on May 6, 1985 in Winston-Salem, North Carolina, USA, is an American professional basketball player and point guard. Guard, playing for the NBA Los Angeles Clippers.

In the 2005 NBA draft, Paul was selected by the New Orleans Hornets with the fourth overall pick in the first round. In the 2005-06 season, he won the title of NBA Rookie of the Year. In November 2011, Chris Paul joined the Los Angeles Clippers.