鳴 鳳 在 樹(Myeong Bong Zae Su) means as follows; In order to the Chinese phoenix(鳳) sings(鳴), the tree(樹) must be splenddid(在). 白 駒 食 場(Baeg Gu Sig Zang) means as follows; In order to grow well(白) a dog(駒), it is enough to feed the animal with such a usual thing(食) in the common yard(場). The writer of this poem seemed to think the common thing is more important than the splendid thing. In other words, you had better to grow well a dog in the common yard than to hear a voice of Chinese phoenix on the splendid tree (129th-136th letters of Tcheonzamun). This is the theme of this Tcheonzamun poem, and theme of most of the Tcheonzamun poems; the common thing is more important than the splendid thing.