| C.I.Y. EDUCATION COMPANY LIMITED | | Live |
| CIYANG ENTERPRISE (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| HK CIYANG INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| CIYANG TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| YIHAO CIYE TRADE LIMITED | Private company limited by shares | Live |
| CIYO TSER (CHINA) CO., LIMITED | Private company limited by shares | Live |
| Ciyu Tech Hong Kong Limited | Private company limited by shares | Live |
| CIYUAN (HK) GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| CIYUAN INTERNATIONAL GROUP (HK) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Ciyuan Space Limited | Private company limited by shares | Live |
| CIYUAN ELECTRONIC TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| CIYUAN (HONGKONG) TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CIYUNXI LIMITED | Private company limited by shares | Live |