Hong Kong stock market anomaly: three major airlines collectively rise, with China Southern Airlines (01055.HK) up by more than 4%. Airlines' operating data for April shows improvement.

According to the Securities Times app, the three major airlines are collectively rising. As of the time of publication, China Southern Airlines (01055.HK) has risen by 4.03% to 3.61 Hong Kong dollars; Air China (00753.HK) has risen by 2.21% to 5.08 Hong Kong dollars; and China Eastern Airlines (00670) has risen by 1.54% to 2.63 Hong Kong dollars.