Bác nào cày game thì ref dùm e nhé :popo_bye:
http://onboarding.nine-chronicles.com/?ref=5cf4a44acc234e2fa0e143c4a7d31096
Whenever you invite a friend, you receive 1.19 NCG immediately.
When a friend you invited achieves LV20, you receive 5.96 NCG and your friend receives 3.58 NCG