Hei001,
Hei Hei is very smart. He doesn't afraid of swimming. I also brought Doris to the club house's swimming pool on Sunday but she cried loudly and didn't want to go into the water. I and my husband had used about 15 minutes to calm her down. We showed her how to 打水水 and told her it's very funny. Fortunately, she started to play with the water at last. I think Doris is very timid. She's afraid of trying new things.