Of course, these trinkets, although powerful and convenient for everyday use, cannot be counted upon when crossing one's tribulation using a magic artifact or talismans crafted by someone else.
Moreover, the Beichen Sword Qi is treacherous and tough to cultivate, with obscure and hard-to-understand techniques. It's common for disciples within the sect to slip up, resulting in self-mutilation or self-disembowelment. Thus, the sect has sparse numbers, said to not exceed a hundred people to date.