there is no relationship between them.

Zixingyuan is the abbreviation of Beijing Zixingyuan Food Co., Ltd., which was established on July 24th, 2118 and is a food-oriented enterprise.

ziguangyuan is the abbreviation of Beijing ziguangyuan catering co., ltd., which was established in 1912, and is a catering enterprise focusing on authentic dishes.

Although Zixingyuan and Ziguangyuan are both enterprises in Beijing, they are two different companies and have no direct business connection.