Welcome to Steemit, tanhongjie! Best wishes for a very successful journey here in this loving and caring community :) Cheers!
By the way, there are several groups you as a newcomer can join. They will stay with you for your journey, helping and mentoring along the way.
@greetersguild invite link https://discord.gg/AkzNSKx
@newbieresteemday invite link https://discord.gg/2ZcAxsU
Thank you for the invite and I want to thank you too for your contribution to the Steemit community