To answer your questions and clarity a few points:
- Mark ONLY the box for a Substitute W-2.
- Do NOT check "Foreign and International Organizations." You were not self-employed and you worked for a "company in China" not a foreign government or international organization.
- You were NOT "employed outside the United States by a foreign employer." You remained inside the U.S. working for a foreign employer.
Please see this TurboTax Help article for filing a substitute W-2: How do I file a substitute W-2 using Form 4852?
