IMO, the Chinese bloke has done a great job with his design, as evidenced by the design appearance and smooth performance of his little rig.
I just hope he used something better than the standard Chinese QC in his construction work!
Don't forget the Chinese had gunpowder and rockets in the 14th century when we in the West were still using clubs and swords.
Never underestimate the skill set of many Chinese, because many are highly educatable and intelligent, and they have a gung-ho, can-do, attitude as well.