Breaking of the Fast.
Chinese Muslims or Hui people 回族 can be found all over the Yunnan province. They often live in separate villages as cultural taboos have kept intermarriage with people of other religions relatively low.
The Muslim calendar is strictly a lunar calendar, which means that Muslim holidays circle through the seasons as every lunar year has less days than the solar year. In addition, the exact timing of Muslim holidays can depend on the actual visibility of the moon, so the dates for any given Muslim festival might vary by one day and are sometimes just decided early in the morning.
Muslims all over the world will be waiting to see the new moon. In Yunnan there are two groups: one will only break the fast once they have themselves seen the new moon, while others can rely on the word of others. Depending on this, even in the same region, Muslims will break the fast on different days.
During Ramadan, Muslims will not eat and drink during the daytime, in the evening in conservative areas, Muslims will have a communal dinner after a prayer after sunset.
On the morning of the day Eid, Muslims will at sunrise gather for prayer and after that will take a communal meal.
Please note that islamic holidays are difficult to compute, so this day might be wrong by a day. Please check.