First, Lao Zhao and Shuigong are playing chess; The old horse and the office boy are playing Go; Lao Wang and carpenter are playing checkers; Lao Li and Lao Lao like to grow flowers, which shows that the plumber, handyman and carpenter are Lao Li, Lao Qi and Lao Chen, and the electrician, doorman and driver are Lao Zhao, Ma Lao and Lao Wang.

Second, Lao Li and Lao Li like to raise flowers, and carpenters only like to raise birds, so the carpenter is Lao Qi.

Third, the doorman is bigger than Lao Zhao and the driver is bigger than Lao Wang, that is to say, Lao Zhao is not a doorman and the driver is not Lao Wang, Lao Zhao is an electrician and driver, Lao Wang is a doorman and electrician, and Ma Lao is a driver and doorman.

Lao Wang and the doorman had a drink together last week, which shows that Lao Wang is an electrician, Lao Zhao is a driver and Ma Lao is a doorman.

Lao Li once borrowed a wrench from a water conservancy engineer and forgot to say that Lao Li is a handyman and Lao Chen is a water conservancy engineer.

Answer: Lao Qi is a carpenter.

Lao Wang is an electrician.

Lao Zhao is a driver.

The old horse is a janitor.

Lao Li is a handyman.

Lao Chen is a water conservancy engineer.