When Lin Pingzhi’s family were attacked the Qingcheng sect, Lin Zhen Nan and his wife already mentioned finding Lin’s maternal grandfather in Luoyang for assistance.
Also after Yue Buqun managed to take possession of the Bixie Swordplay kasaya from an unconscious Linghu Chong, he tried to kill Lin Pingzhi a few times, and nearly succeeded in those attempts; these were the times that Lin Pingzhi was most vulnerable in his life.
Quite a few times, Lin Pingzhi started questioning himself how could he survive those ordeals and get revenge for his parents.
So why did Lin Pingzhi not really seek help from his grandfather then?
Although the Golden Sabre school is not as established and skilled as Huashan sect, it is safe to assume that Yue Buqun will not be able to try anything funny against them (at least directly) should Lin Pingzhi escape there.
At the very least, Lin Pingzhi can stop worrying about any imminent danger to his life under the protection of his grandfather. He can also expose Yue Buqun's true colors to the pugilistic world through the Golden Sabre Manor.
Any thoughts?