At Princess Zhaoyang's coming-of-age ceremony, Liu Weiqing first took human form.
He slipped into the imperial palace and met Princess Zhaoyang, the emperor's most beloved daughter.
Later, when a political upheaval struck, the much-loved Princess Zhaoyang was forced to marry into Northern Qiang in the hope of securing a brief period of peace for her country.
Liu Weiqing dug up his roots and followed Princess Zhaoyang to Northern Qiang.
Then Northern Qiang fell, and the royal family brought Princess Zhaoyang back to the palace.
Princess Zhaoyang contracted a cough and died on the journey.
As a tree spirit, Liu Weiqing happened to have the power to save Princess Zhaoyang.
Theme: Look ahead and never give up.
