Curate, connect, and discover
Adding the fact that Shen Yuan was a rich kid plus the fact that he thinks that running a peak, teaching disciples and going on missions is just lazing around then I wouldn't be surprised if he did some find of sport
Ok, here me out, a lot of rich kids tend to do a whole bunch of extra circulars (trust me, I went to a school filled with trust fund kids) and Shen Yuan considers himself lazy despite very clearly doing a lot. So, he probably got that notion because in his first life he had a jammed pack schedule and uses that as a comparison.
So with this in mind he probably has a bunch of skills, one of those being some form of sport.
Anyway, flash forward to some time post cannon and a wife plot happens. In the original PIDW it was a excuse for a sport episode (or character(s) in this case) with future wives and current wives to wear short clothes and run around. It's probably written because it a fan favorite trope in media and will mist likely bring in a bigger audience (SY can be heard cursing airplane for unoriginalty, contradictions and historical inaccuracy). We'll just say that some kingdom/demon royal family decided instead of violence (because who could ever beat Bingge in a fight?) to use a sports tournament as a way to decide who get to rule.
Well, when this happens in svsss Shen Qingqiu ends up roped into this (ahh, the curse to be a love interest) and just absolutely destroys everyone at off brand tennis (and/or other rich people sports). Luo Binghe would also be destroying people at literally any of the games but he's too busy trying to not lose it over SQQ's (previously stated) short clothing, pulled tightly up hair and skill