Guardianship Across Centuries

In a small town, a stubborn young man and a teacher who had just worked for half a year shared hardships and silently guarded each other; in a remote mountainous area, a young female teacher struggled for her youth for a group of children and guarded their smiles; in a university, brothers and sisters from the same school traveled across thousands of mountains and rivers just to seek the meaning of "guarding"... All things in the world are complicated by emotion, and also gorgeous by emotion. This protection that spans centuries hopes to light up people's confused future.