The background of the public platform of basic education resources in Tianjin is epochal. Because it has statistical data in the background, this function can perform data statistics and timing in the background. When you hang backstage, it will be timed.

I'll take a screenshot to show you its background statistics function:

This data statistics function can count some data and count the time hanging in the background. The business scope of Tianjin Yun Bo Education Science and Technology Development Co., Ltd. is: research and development and promotion of educational software; Educational information consultation; Tourism information consultation; Business information consultation; Organize cultural and artistic exchange activities; Conference services; Photography service; Sales of stationery, handicrafts, daily necessities, sporting goods, special teaching equipment, books, audio-visual products, clothing, shoes and hats.