ジャィ) is Pang Hu's sister, also translated as Yu Zhi, Pang Mei, Xiaohua, Ahua, Arjun, Zhu Xiao, Kong Tianlan, Ji Lan, Jie Zi, etc. , first appeared in June 1970 "four-year primary school students".

Pang Hu's sister, Pang Hu's mother and Pang Hu's father's daughter.

Before Doraemon dreamed of the future, Daxiong had already married her and had at least six children after marriage. She will become fat and her family will be poor, but the emergence of Doraemon has changed their fate. (See From the Far Future World)

Later in the story, she began to show her painting talent, began to dream of becoming a cartoonist, and her personality became more quiet and sentimental. She submitted and published cartoons under the pseudonym Christina Okada (クリスチーネネ), and Pang Hu loves this sister very much.

Ji zi's time is not clearly expressed in the story. At present, the official setting is two years younger than my brother. In the paddy field animation, it is mentioned that Jizi is in the third grade of primary school (see "Hot Blood! Toyota advertises that when Pang Hu and others set the age at 30, ji zi will be 28. In addition, ji zi doesn't seem to be his real name, which is similar to his brother's nickname Pang Hu/Ji 'an, but the paddy field version of Where is Cinderella calls himself Koko Okada (although the official data still shows Koko, the paddy field version itself is set in confusion).

She liked Mao Shoufu in the neighborhood next door, and later became friends because she liked comics. They collaborated to publish comic books with their peers.