Tin Alloy Hairpin: Sword of Everlasting Sorrow

A shabby book, a famous sword that has disappeared, and a bloody legacy spanning decades... What kind of heroic spirit and generous tragedy were hidden under the great chaos that shattered the entire Li-Tang Central Plains, which had long been peaceful and prosperous in singing and dancing? How many mottled blood and treacherous conspiracies are concealed? No one knows where to say it, only the sword is shining brightly, and the chill is as cold as yesterday... "The eternity of heaven and earth will eventually come to an end, and this hatred will last forever."