On December 14, 2015, China-SONG telescope which was developed by Nanjing Institute of Astronomical Optics & Technology was conducted a site inspection in Purple Mountain Observatory in Delingha, Qinghai observation base.

The project acceptance of China-SONG was organized by National Astronomical Observatories. Experts from Science and Technology Department of Qinghai Province, National Astronomical Observatories, Purple Mountain Observatory, Yunnan Observatory and Astronomical Instruments company in Nanjing examined installation operation of the one-meter telescope and ancillary equipment. Afterwards, they listened to the project group reporting scientific objectives, the telescope and spectrometers development and then they conducted a careful inquiry on project Implementation. Finally, they listened to test expert group test report. Various technical indicators had reached the requirements of development tasks specified in the letter and the group agreed that China-SONG passed the on-site inspection Consistency.

Participants in international SONG (Stellar Observations Network Group) plan also included Denmark, Spain, the United States and another countries. It was planned that four one-meter diameter telescopes near the equator in both hemispheres was placed in order to compose global observation network which could be used for uninterrupted observation and study time domain stellar physics including stellar vibration, exoplanet detection and another topics of research. Prototype node of SONG international network which was funded by Danish was completed in October, 2014 in the Teide Observatory in Tenerife, Spain. It verified the scientific potential of the device. The successful acceptance and scientific observation of China-SONG in Delingha observatory marked that SONG Officially entered the network operation.