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
①lt; name gt; French style; model. "Book of Rites·Confucianism": "What you do in this world will be regarded by future generations."
②lt; name gt; regular script, Chinese character font. Zeng Gong's "Preface to the Records of Langguan Shi of Shangshu Province": "This preface contains only the word ~, which is serious in energy and comes from nature. It is like moving one's face to perform rituals, which is not a strong one."
③lt; name gt; Tools for simple-shaped products are used in conjunction with molds or molds. The mold determines the surface quality of the product, and the mold determines the overall size and shape.
楷jiē
①lt; name gt; regular tree, also called Pistacia chinensis. Duan Chengshi's "The Continuation of Youyang Zazu": "There are trees like oak trees in Shu... people in Shu call them ~wood."
②lt; form gt; upright. Liu Shao's "Records of Characters·Body Differentiation": "Strength~Jianjin is used in Zhenqian and lost in specialization."
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 funny. 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, the tree was first planted in Kongzhong.
Reference materials:
Baidu Encyclopedia - Kai