Welcome to Steemit @wuyu and congratulation for your excellent first post!

Some of my posts might interest you. Feel free to follow me

I'm also a witness for the Steemit network. You can read my Witness introduction here. If you find my work for Steemit valuable, your witness vote is welcome.
If you want more info about witness role, just drop me a reply ;)

I hope you will enjoy Steemit as I do. Cheers!!