This is Zhong Rong's evaluation of Zuo Si's poetry in "Shipin". Zuo Si's poems, especially his representative work "Ode to History", express his dissatisfaction and emotion about reality through chanting history. The sentiment is high-pitched, the writing is vigorous and the momentum is high. It is the inheritance and development of Jian'an style. This spirit of his poetry creation , which is what later generations called "Zuo Sifeng Power".