1. The hour hand goes 0.5 minutes and the minute hand goes 6 minutes.

At three o'clock, the hand difference is 90.

So 90/(6-0.5) = 900/55.

After 900/55, the first coincidence occurred.

2. The alignment difference is 270.

270/(6-0.5)=2700/55 points

After another 2700/55 minutes, the hour hand and the minute hand Zhang Kaicheng in a straight line for the first time.