Xiao Xia (pseudonym) is a student of a primary school in Shunyi District, Beijing. When she was 3 years old, her parents were divorced by Shunyi court because of their personality incompatibility. Xiao Xia was raised by her mother, Ms. Liu. In 2010, under the mediation of Shunyi court, Xiao Xia changed his custody right and was raised by Mr. Li. Recently, due to the shortage of living expenses, Xiao Xia sued Ms. Liu to the people's Court of Shunyi District, demanding that the maintenance fee be increased from 200 yuan to 500 yuan per month.

Xiao Xia claims that she is now a sixth grade student. She has to spend 240 yuan a month to eat at the school dining table. Because of the rising prices, Ms. Liu pays her 200 yuan a month for living, which is far from meeting her basic needs. In order to facilitate her future life and study, Xiao Xia asked Ms. Liu to increase her monthly maintenance fee from 200 yuan to 500 yuan.

Ms Liu argued that she did not agree with Xiao Xia's demands. Although Xiao Xia was raised by his father, Mr. Li, the money for Xiao Xia to eat at the school table was always paid by Ms. Liu directly to the school, and the amount was more than 240 yuan Xiao Xia said. In addition to paying for a small table for Xiao Xia, Ms. Liu also gives Xiao Xia 200 yuan a month to live on. 200 yuan is enough for a 10-year-old child's monthly daily expenses. The reason why Xiao Xia's living expenses are short is that Mr. Li appropriated the living expenses. After her divorce, Mr. Li remarried with Ms. Wu, and had a son after marriage, and Ms. Liu's monthly living expenses for Xiao Xia were all used by Mr. Li for the daily living expenses of their children.

After mediation by Shunyi court, the defendant, Ms. Liu, agreed to increase Xiaoxia's alimony from 200 yuan per month to 400 yuan per month, which should be paid before the 10th day of each month until Xiaoxia is 18 years old.