China — Street‑Food Heat Index Crawl: northern dumplings & steamed buns

Plan a winter street‑food crawl in China around northern dumplings & steamed buns. Output a table with: rank, stall/name, exact spot (market/station), signature dish, spice/heat index (0–5), best time (lcl), queue tip, price range, vegetarian option, notes. End with 5 photo/caption ideas for social.