There is a wonder in Yongning City: every time when the city reaches Shangsi, a dark blue halo that looks like a blue dragon will flash on the surface in the north of the city. The locals don't know its principle or origin. When talking about it, they only call it Qinglong Yuan. In the 1970s, local organizations were exploring the area. An exploration team of more than ten people suddenly fell underground when approaching Qinglongyuan. For a time, they lost contact with the outside world. Half a month later, the group appeared at the exit in a state of embarrassment, keeping secret what they had seen and heard during the period of loss of contact. Finally, the Ministry of National Security dispatched a special operations team to cordon off the place and dispel relevant reports. At this point, the legend about this place has become more confusing and impossible to verify, and no one in the local area can tell the reason.
In September 2018, Bai Yunping, as the then director of the Ninth Division of the Special Security Bureau of the Ministry of National Security, went to Yongning City, the northwest station of the Ninth Division, to inspect the work of the Ninth Office. Qin Zhen, the director of the Ninth Office, came to receive him. By chance, the two entered Qinglongyuan together. Qin Zhen behaved strangely in Qinglong Yuan, which made Bai Yunping suspicious. Under heavy doubts, Qin Zhen's origin seems to have become a mystery that needs to be investigated.
Intention: neither birth nor destruction, neither dirt nor purity, neither increase nor decrease.