This morning Beihai port informed all logistics companies that effective today, all transportation of fireworks including on roads and by sea must be stopped. This includes loading of containers onto feeder vessels. There was no announcement when transport can resume.
This morning the Work Safety in Guangxi also informed all factories that they are not allowed to start production until further notice. Again, there was no indication when they could re-start.
This could be due the Olympics but most likely it is due to a firework accident this week in a Hepu factory that resulted in two fatalities.