I really think wang would not get la2028 gold medal with Lin shidong in the way (if its an all china final) and brisbane2032 might be a little old for him + there's the maximum 2 singles per player in Chinese table tennis.
In the World championships there is chance for wang chuqin, only if there isn't fan zhendong and if he can beat Lin shidong, all the other Chinese players are too old, and the next generation of Chinese men players I know of are pretty mid compared to the last 2 generation of men. And there's also the rising talent of European players, Harimoto is steadily improving, so in my opinion, I don't see a grand slam occurring for wang chuqin