Pork & Bok Choy Stir Fry

Here's something I put together that came out surprisingly well for a first go.  I bought a couple of pork loin chops, sliced them into strips, and marinated them for about four hours in a mixture of about a quarter cup of rice vinegar, a few tablespoons of toasted sesame oil, a few tablespoons of soy sauce, and a tablespoon each of brown sugar and roasted red Thai chili paste.  Then I took a couple of stalks of celery and a large onion and chopped them.  Next I cut two heads of bok choy into small pieces.  I got a tablespoon or two of toasted sesame oil hot in the wok and slightly browned the pork, then set it aside.  I added the onions and celery and sauteed them for a minute or two.  Next I added the bok choy and continued sauteing until it shrunk down.  Then I added the marinade plus a sauce made of about a half-cup of vegetable stock, a little fish sauce, and another tablespoon of the chili paste.  I then brought the sauce to a boil  (this is important since the marinade had the raw pork in it), then lowered the heat to a simmer, stirring occasionally in order to ensure even cooking.  After a few minutes I returned the pork to the wok and continued cooking until the bok choy was tender.