It is the most famous "Three Heroes of Longtan" in the history of China's covert front struggle.

The "Three Masters of Longtan" refer to Xiong Xianghui, Shen Jian and Chen Zhongjing, with Xiong Xianghui as the main figure.

All three of them were lurking in Hu Zongnan, and Xiong Xianghui served as Hu's personal adjutant and confidential secretary-general for twelve years.