Here is the Weibo post by Sun Yuchen cited in the original Mars Finance App article (translated using Google from the original Chinese)...
...according to people familiar with the matter, it was revealed to Mars Finance that Tron is about to acquire the blockchain project Steemit. -Mars Finance APP (WeChat: hxcj24h)
No mention of STINC acquisition in the WIEBO post made by Sun Yuchen.