A Storm Sign 8 was issued earlier by the HK Observatory. It was issued at 6.40am native time, which halted morning commerce. The warning will stay in impact till no less than 4pm, which successfully cancels commerce on HKEX for at the moment.

HKEX guidelines on extreme climate:

• pre-market commerce is cancelled if a sign 8 or larger is in drive between 7am and 9am native time (as I publish its simply after 7am)
• there shall be no morning session if such a warning is lowered after 9am
• there shall be no buying and selling for the day if it is nonetheless in impact after noon