断肠崖 (a place from Return of the Condor Heroes)

"十六年后，在此相会，夫妻情深，勿失信约。"
"小龙女书嘱夫君杨郎，珍重万千，务求相聚。"

According to Baidu,

"断肠崖上叹绝情，绝情谷底哭断肠"