Nih sekedar info ttg setting cerita silat.

Yanmenkuan Pass atau Gan Bun Koan, atau Pintu Gerbang Belibis Terbang: ini adalah tempat orang tua XF dibantai, dan tempat dimana XF akhirnya bunuh diri.

Half-way along the zigzag interior line of the Great Wall that runs across the northern part of Shanxi province there is a famous fortified pass nestled amid towering, rugged mountains.
This is Yanmenguan, known as "one of the nine strategic forts in the world" since the Warring States period (475-221 B.C.). Infact the name Yanmen (Gate of Wild Geese)is in itself suggestive of its strategic importance. The mountain there, Yanmenshan, has a peak 2,057 metres above sea level, and it was said that even migrating wild geese could not get over it but had to fly through the narrow pass below.