Zai Lab's 15min chart signals bearish trend with Bollinger Bands narrowing.

As per Zai Lab's 15-minute chart, there has been a narrowing of Bollinger Bands, a death cross in KDJ, and a bearish Marubozu on December 5th at 14:30. This suggests a decrease in the magnitude of stock price fluctuations, a shift in the momentum towards the downside with potential for further decrease, and control of the market by sellers. Consequently, it is likely that the bearish momentum will continue.