Tianhu Started, Why Did the Counterattack System Come About?

The son of a great general at the beginning, with top talent, a princess betrothed, several princes and sworn brothers, a happy family, and world peace. There was no painful breakup of the engagement, only a well-behaved princess girlfriend, and no dynasty change, only a stable general father. He Yi's start in life was simply ridiculous. But when he was fifteen years old, his life's counterattack system came. I am so stupid at the beginning, how can I counterattack like a chicken feather? (Life counterattack system: If you encounter difficulties in life, the system can assist in counterattack, and it is forbidden to be the first to "declare war".)