In mainland China, Eid al-Fitr is a public holiday in Ningxia and Xinjiang.
The two regions are both important centers of China’s Muslim communities. Ningxia is an autonomous region associated especially with the Hui people, while Xinjiang is home to many Uyghurs and other Muslim ethnic groups. Eid al-Fitr marks the end of Ramadan, the Islamic month of fasting, and is celebrated with communal prayers, family visits, special meals, and charitable giving.
This is a regional holiday arrangement, not a nationwide public holiday for all of mainland China. That distinction is the key to the question: China has many ethnic and regional holiday provisions, but Eid is not generally observed as a statutory holiday across the entire country. Sichuan, Guangdong, and Tibet are therefore not the paired answer listed in this context.
Ningxia and Xinjiang are sometimes described simply as “provinces” in casual writing, but both are autonomous regions at the provincial level. Their inclusion reflects the large Muslim populations and distinct cultural traditions found there.