Judging from the meaning of Kaizi, if Kaizi is used in a name, it should mean French, model or upright.
The ancient Chinese meaning of Kaikai is as follows:
楷 kǎi
①
②
③
楷jiē
①
②
Extended information:
Shuowen Jiezi
p>Wooden. The tomb of Confucius was covered with trees. Every tree has a sound. Kuhaiqie〖Note〗?, ancient text.
Shuowen Jiezi Note
Kaimu also. Confucius' tomb is surrounded by trees. Huang Lanyun. There are hundreds of trees in the tomb. All different species. It is said that the disciples each took their own square trees to plant them. According to regular script, it is also one of the square trees. Confucianism says. Do it in this life. Later generations regarded it as regular script. Regular script, French style. The words in regular script are ridiculous. I have learned from the past, but future generations will learn from this. From wood. All voices. Terrible suffering. Fifteen parts. The following is the name of the tree. Therefore, it was first planted in the hole tomb.
Reference materials:
Baidu Encyclopedia - Kai