Don’t know about China specifically but Stem cells won’t do much without the chemo beforehand. The one proven “cure” for MS is a heavy dose of chemo to destroy your immune system followed by stem cell transplants to re-seed it. Typically they take the stem cells from a surgery into your femur bone… This therapy can be purchased in Germany or Israel but costs $50,000 Euros and up. Also has a very high mortality rate at ~2%.
Best of Luck.