Zhang Harmony, 34 years old, is the corrector of the law of cause and effect in the "Tingfeng Pavilion" in the Eastern Wasteland. He has the talent of Pixiu's bloodline gathering and the timeless trace method. During a "melody deduction", he accidentally glimpsed his own mortality - he would be killed by the Monument of the Return of All Laws in the "Core of Chaos" seven years later. In order to find a way to break the calamity of death, he embarked on the path of cultivation on the musical ladder. In the world of mortal music, he got acquainted with "Qin Buyu", a senior sister whose cultivation was ruined because she had to bear the punishment of heaven for him, and "Xiao Tianlu", a son of destiny who resented him for interfering in his fate. Zhang Harmony discovered that his Pixiu bloodline was not simply about gathering luck, but the "melody of destiny" that could swallow up others and transform it into his own cultivation. However, this swallowing would accelerate the loss of the rhythm of the avenue.
As his cultivation level increased, Zhang Harmony gradually became involved in the thousand-year conflict between the upper realm of heaven and the lower realm of abyss. He learned the truth about the Jade Book of Creation: it did not record the creation of heaven and earth, but a seal that trapped the core of chaos, and the Stele of the Unification of All Dharmas was the key to the seal. Xiao Tianlu changed his destiny because of his resentment towards Zhang Hehe, and took refuge in the Upper Realm Heaven, trying to destroy the Lower Realm Abyss with the sound of nature. Zhang Hehe must break through to the realm of "Great Sound and Sound" within seven years, while facing the fate of his senior sister Qin Buyu gradually dissipating due to divine punishment, and Xiao Tianlu's crazy revenge. In the end, he chose to sacrifice his Pixiu bloodline and transform himself into a new "Rhyme and Rhythm" to reconcile the imbalance between heaven and earth and return the Monument of the Unification of All Laws to the core of chaos. Although Zhang Hehe's body has disappeared, his "melody" will last forever in heaven and earth, becoming an eternal echo for later generations of immortal cultivators to understand the great road.
