What are the artistic features of Cang Kejia's poems?

When Wen Yiduo prefaced Brand, he showed the artistic characteristics of Cang Kejia by comparing Su Shi with Meng Jiao. Zang's poems lack the majestic charm of Su Shi, but have the skill honed by Meng Jiao all his life. He should belong to the "Kuyin School" in new poetry. Cang Kejia himself seems to be trying to get rid of excessive formality and walk on the gorgeous road.