Stocks in Asia mostly tumbled on Thursday following a plunge on Wall Street overnight.
Greater China markets struggled for gains as Hong Kong's Hang Seng index fell 1.63 percent in afternoon trade. The Shanghai composite erased earlier losses of more than 2.5 percent to close fractionally higher at 2,603.8. The Shenzhen composite declined 0.34 percent to close at 1,292.80.
One market watcher said that nothing can stop the "bear run in October."
"The bear runs especially fast in October," Dickie Wong, executive director at Kingston Securities, told CNBC's "Squawk Box" on Thursday, with "market routs everywhere." He added that the Hang Seng index could "continue to test new low."
Shares of Cathay Pacific were down 3.95 percent after dropping to a nine-year low earlier in the trading day.
The airline said that data of about 9.4 million passengers, including passport numbers and Hong Kong identity card numbers, were accessed without authorization, Reuters reported.