In fact, Zhu's purpose in writing this poem is not to praise spring and write about spring outing. But a profound truth from the perspective of Neo-Confucianism.
The "Surabaya" mentioned in the first sentence of the poem is in the central part of Shandong Province, where Confucius gave lectures and preached in the Spring and Autumn Period, and was buried here after his death. In the Southern Song Dynasty, the northern territory was occupied by Jin people, and Zhu never went north. It is naturally impossible to "find incense" in Surabaya. "Surabaya" here refers to Confucius and Confucianism; "Seeking incense" refers to exploring the way of saints. Looking for incense in Surabaya is to go to Confucius to find the truth, which is the theme of the poem. The last two sentences of the poem are intended to enlighten and guide people to realize that once the essence of Confucius' Confucianism is widely popularized and accepted by everyone and a new understanding is gained, they will realize the pleasure of "learning Taoism", thus bringing vigorous vitality and brand-new atmosphere to all aspects of society, making great changes and having far-reaching influence.
The whole poem adopts the technique of metaphor, discussing things with scenery and reasoning with things. It is not abstract reasoning, but has philosophical charm and interest, so this poem has both natural aesthetic interest and philosophical aesthetic height. As later generations commented on Zhu's poems, "Because he first put a lot of truth in his mind, and then he looked for the poet's words to set it off. Isn't this the same?" In other words, Zhu expressed his philosophy in real poetic language.