1988- 1990, applied for a postgraduate degree in criminal investigation at George Washington University in the United States, and was admitted with rich experience in handling cases.
1993, Shi Zijian obtained American citizenship.
1995 to 2005, he worked in the Washington District Prison Bureau, Meng County Police Department and Special Police Team as a prison guard, patrolman and special police. During the period, he served as the personal bodyguard of many politicians such as the president and vice president of the United States. He won an award for helping solve the world-famous "serial sniper shooting in Washington". As a policeman, "Bruce Lee" has been interviewed and reported by mainstream media at home and abroad for many times.
He returned to China in 2005 and has taught in Zhejiang Public Security College and Shanghai Public Security College since then. In 2007, I published my autobiography "I am an American policeman"