Chinese concept stocks in US stock market fluctuate before the market opens, Baidu drops 2%

Chinese concept stocks in US stock market are fluctuating before the market opens. Netease is up 2%, Beigene is up 1%, Pinduoduo is flat, Alibaba is down 0.4%, JD.com is down 0.8%, Bilibili and Ctrip are down 1%, and Baidu is down 2%.