The Luoyun Sect is so poor that its five master and disciples have to split a single spirit stone into eight pieces. Yet, in secret, they spoil their youngest disciple, Lin Yan, rotten.
Lin Yan has no interest in cultivating immortality and loves keeping accounts instead. One day, he went to the back mountain to crack walnuts and happened to save a badly wounded silver-gray wolf cub on the brink of death.
He recorded half a bottle of medicine and two pieces of meat in his ledger, planning to make the little wolf repay the debt by catching wild rabbits once it recovered.
Only when the northern frontier split open did he realize that the black wooden ruler he used to crack walnuts was an ancient divine artifact, and the indebted wolf cub he'd raised at home was the Wolf King of the Wasteland.
Theme: Even a humble mountain sect holds immeasurable warmth. When the laws of heaven collapse, even an ordinary person can measure the sky with a ruler.
