We have just found out that Henry has created an official Weibo account. He made his first post while in Shanghai for the P9 event there a few weeks ago. Henry shared this great photo, along with a message for his Chinese fans:
This is the link for you to follow him! (account is verified). If you're not in China, the Weibo app makes it a little easier for you to sign up. Also, if you click on the letter icon at the top of your page, Google will translate the basic info. Not really ideal, but it helps.
Thanks to @HCavillArg, @Primula87_tmblr for the heads up.