Year 1: Beginning of LOCH. Gwok Jing and Yeung Hong born.
Year 18: Gwok Jing and Yeung Hong mature, begin adventures.
Year 20: Death of Yeung Hong. Second Mt. Wah Sword Tournament. Birth of Yeung Gor. Death of Genghis Khan. End of LOCH.
Year 33: Beginning of ROCH. Gwok Jing is 33 years old. Yeung Gor is 13 years old.
Year 36: Yeung Gor emerges from training in Ancient Tomb.
Year 52: Yeung Gor and Little Dragon Girl reunited after sixteen-year separation. ROCH ends.
Year 55: Encounter between Gwok Seung and young Cheung Gwun Bo (16 years old).
Year 129: Cheung 3 Fung's 90th birthday. HSDS begins.
Year 139: Cheung Chui San, Yan So So, and Cheung Mo Gei (10 years old) return from Ice Fire Island.
Year 144: Cheung Mo Gei leaves Butterfly Canyon
Year 149: Cheung Mo Gei becomes Ming Cult Leader.
Year 150: End of HSDS
From my estimates, Gwok Jing was born in the year A.D. 1196. Using the 150-year timeline, HSDS ends in the year A.D. 1346 . . . still some 20 years before Chu Yeun Cheung would establish the Ming Dynasty.