What is the age of youth?

Youth means: between the ages of thirteen and twenty, when you are an adult, youth should be the best age in your life, with simple thoughts and innocence. Fanghua, as its name implies, is fragrant flowers and beautiful years. Everyone has his own "youth", which seems heavy and sour, but it will not be eroded by years, polished by fate, suppressed by poverty, complacent by wealth, and indifferent to pursuit. It will be treasured in everyone's heart for a long time, making people memorable.