This article corroborates the statement that Tencent owns 30% of Larian, but they do not have voting rights. Swen Vincke and his wife control the direction of the company with their combined 70%.

I realized I was actually slightly off base on the Epic share numbers, where Tencent owns slightly less than the 49% I had initially stated. This article claims the number at 40% total capital, which works out to 48.4% issued shares. However, CEO Tim Sweeny remains the majority shareholder of the company, and Epic has apparently stated that Tencent does not have any involvement with the way they run their business (at least as of when this article was written in 2019, I don’t know if things are different now but I have not heard as such.)