What is the relationship between Chiyou and Youzu?

Same company. According to China Economic official website, Chiyou Information Technology Co., Ltd. is a wholly-owned subsidiary of Shanghai Youzu Information Technology Co., Ltd., so Chiyou and Youzu are the same company. Shanghai Chiyou Information Technology Co., Ltd. was established on June 20 12 14, and its legal representative is Lu Jing, with a registered capital of100000 yuan and its registered place is Yishan Road, Xuhui District, Shanghai.