Born Zhou Yu, to a county magistrate and a former soldier, but neither of his parents knew what to do with him
Brilliant from a young age, sharp and quick-witted but impossible to control, natural head for books but a personality that didn't quite agree with it
Sent to Lulin Manor to be tested for potential and was eventually taken in under his master, Lu Xiaotian, then head of the sect
Became head disciple at age 12
Studied at Lingzhu Academy as a young man, one of the leading members of a guerilla experimental research group looking to push the limits of golden core formation (and restoration), eventually turning into a project that involved the merging of cultivators and their weapons
This research ultimately lead to the creation of an entity called the Luji (炉基 or Furnace Foundation), a fusion of man (in this case, Jin Xuanran) and blade (Huangxiao, the twin to Zhou Yanshan's own Huihuang)
Because obviously this didn't end up going very well, Zhou Yanshan along with some of the other students decided to put an end to the experiments, creating a schism
Those that wanted to continue the experiments fought back, lead by a man named Shangguan Liang. The details here are partially lost to history. A fire broke out at Lingzhu Academy, resulting in heavy casualties.
In the aftermath of the fire, Zhou Yanshan and a handful of others sealed the Luji beneath the academy, binding themselves to the Keeper's Pact, preventing them from revealing the details of the experiments to outsiders, binding their qi, creating the wards that surround the Luji's chamber.
60 years pass without much incident, in the intervening time Zhou Yanshan became the leader of Lulin Manor
The seal is breached in a second fire at Lingzhu. The Luji is tampered with. A man is killed. The remaining pact keepers reconvene at Baiwu Valley and start a months-long process to renew the wards and improve the Pact
A few things happen related to a mid-level cultivator and part-time crook named Lin Donghua coming across
a strange child being kept in captivity
The missing parts of the Luji are not recovered, traced, or even seen again until an unremarkable sword is found embedded in the body of a young groom in a village at the foot of Mount Lulin
Zhou Yanshan sends the young man's widow, possessed by a sword spirit, and two of his disciples, to seek help in Baihua City, knowing that the person they seek can't actually tell them anything
What is he up to what's he doin'