How about going to Qinhuangdao to see the sea in June?

1. The sea in Qinhuangdao is still quite blue. Repulse Bay and Beidaihe are both good. It may be cleaner during the Dragon Boat Festival, and not many people light bonfires at night. Repulse Bay doesn't feel like the sea, but if you want to get close to the sea, Repulse Bay is a good place and absolutely safe. 2. Liu Zhuang (if there is a road, it's not far to the south) has convenient transportation and many family hotels, which are quite cheap. 100 is less than one night. Look for it when you go or book it online in advance.

If you play for two days, you can go to Beidaihe for a while on the first day. If the weather is fine, you can also go to see the beautiful scenery of the moon hanging on the sea at night (girls had better go back to their homes before 9 o'clock); You can take bus No.34 to Repulse Bay the next day.