What are the best examples in Du Fu's early poems?

First, the roaming period of reading (before the age of 30)

The representative works of this period include Wang Yue, Cao Huma's poems and Li Bai.

Second, trapped in Chang' an period (30 to 44 years old)

During this period, he wrote poems that criticized current politics and satirized dignitaries, such as "Car Shop" and "Two Roads". Among them, from Beijing to Fengxian, 500 words of love story is particularly famous, which indicates that his understanding of the political and social reality of the imperial court has reached a new height after ten years of hard life in Chang 'an. Xuanzong held three successive sacrifices from 75 1 year 1 month 8 to 1 year/month 8. Du Fu took this opportunity.