The subject wants to ask, "When will the after-school delay service in Xiaoxiang Primary School in Xi 'an Annan end?"? 18:40。 According to official website of Xi Education Bureau, Nanxiaoxiang Primary School provides delayed service after class at 15: 55 and ends at 18: 40. After-school delay service includes special training, homework counseling and other activities. Nanxiaoxiang Primary School is located in Nanxiaoxiang, Xiguanzheng Street, outside Xi West Gate, Shaanxi Province. It is a full-time primary school in Lianhu District. There are 14 teaching classes, 36 teaching staff and 640 students, and the school covers an area of 32 10 square meter.