Back in 2014, John Kwong opened this topic and pointed at a Chinese TV program about building that boat, in Tianjin (near Beijing).

The Youtube video below seems to be a shortened version of the same thing. However, when I try that original link, I come to a Chinese site where I cannot find my way to that program, so the Youtube clip  will have to do.

I suggest you have a look at the discussion from 2014. Here are a few stills that I captured from that TV-program.

...plus this photo  -  products from the little forge.

Arne

PS: Note the foredeck man with the long stick. My armchair guess is that he kept the foresail sheet in order when tacking or gybing.

Chinese television documentary following a traditional wooden build

Youtube link:

https://www.youtube.com/watch?v=Gm35S7FM7o0

Ignore the strange animated opening, skip to about 3 minutes in.

The focus is the boat, not the rig, but lots of interesting info nonetheless...