Why is the sky blue recently?

It's normal, because typhoon Vicente has been active in the northern part of the South China Sea in recent days and landed in Chixi Town, Taishan City, Guangdong Province at 04: 15 today.

Because the typhoon sucked away the water vapor, the Yangtze River Delta (more widely in East China) has generally seen blue sky in recent days. (As shown in the picture, yesterday's satellite image shows that the typhoon is on the coast of Guangdong Province, and there are almost no clouds in East China. If I guess correctly, the landlord is somewhere in the Yangtze River Delta. My family has been in this situation recently.