Sept 4 morning — Kuaijishan and Guyue Longshan opened sharply and were quickly locked at the daily limit; Jinfeng Wine followed, briefly hit the limit then re-opened, finishing the morning session up about 7%. The three firms said, "As of now, we have not received or found any related information. The company is operating normally." These three are among the few A-share listed yellow-wine producers; the last intra-day collective limit-up across them was May 27 last year.