a brief translation:
it looks like she starts by curdling milk. The solids from the curdled milk are then scooped into the pot and cooked down until the solids and liquids have fully separated. The solids are then separated from the liquids and packed into the wooden boxes, where they will be left to sit for some time.
Here's a video that shows home production of "milk tofu" (from what I can tell):
https://www.youtube.com/watch?v=AEuzI7-3riE
Too bad I don't know Chinese, and the article makes a very poor job of explaining how the various cheeses it lists are actually made. Harrumph.