It should be the sorrow of separation - by Young Master Wu Huan
Volume 1: Purple jade pulls out the cold ashes, and the character of the heart is completely changed
Chapter 1: Mountains and rivers are eternally silent
Chapter 2: Country is a marriage
Chapter 3, Hongdou
Chapter 4, Ten Thousand Ren Palace Wall
Chapter 5: Get married
Chapter 6: The startling swan
Chapter Seven: Heart-burning Tribulation
Chapter 8, The Secret of Immortality
Chapter 9: The Order to Kill the Immortal
Chapter 10: Chang'an will never let you down