(1) Those who fall into the world think of their trees, and those who drink their streams conceive their sources. "Those who fall into reality think of their trees, and those who drink their streams conceive their sources" comes from Yu Xin's Zhengdiao in the Southern and Northern Dynasties. The poem says: "Li people are cultivating, and gentlemen are promoted in the pear garden." Those who fall into reality think of their trees, and those who drink their streams are pregnant with their sources. " The main idea of the poem is that ordinary people plow the fields and scholars indulge in rites and music. When you eat the fruit on the tree, you will think of the fruit tree; Drinking water from the river reminds me of the source of this river. "The laggard thinks of his tree, and the drinker thinks of his source" is the origin of the idiom "Drinking water thinks of its source". This poem was originally intended to express the feelings of missing their homeland, indicating that they will never forget their homeland and their roots. Later generations are often used to learn to remember the source of knowledge, which comes from the teacher's education.

Silkworms in spring will weave until they die, and candles will drain the wick every night. "Spring silkworm dies, night candle tears dry" comes from Untitled Time, which was written by Li Shangyin, a poet in the late Tang Dynasty. It was a long time before I met her, but it was longer after we broke up. Shiyun: "Time passed long before I met her, but since we separated, the time has become longer, and the east wind has started and a hundred flowers have blossomed. Silkworms in spring will weave until they die, and candles will drain the wick every night. In the morning, she saw her hair cloud changing in the mirror, but she bravely faced the cold of the moonlight with her evening song. There are not many roads to Pengshan. Oh, Bluebird, listen! -bring me what she said! " . This poem is a work of lovesickness after parting. The original intention of this poem is to express the deep affection of lovers who will never die. However, it is a common metaphor that "silkworms will weave until they die in spring, and candles will drain the wick every night". Later generations often praise the teacher's selfless dedication to the students by not spinning silk when the silkworm dies and not crying when the candle burns out. It is a high praise for a teacher's selfless dedication and noble quality to do one's best until one dies.

(3) Hsinchu is taller than the old bamboo branches, and it is all supported by old cadres. "Hsinchu is taller than old bamboo branches and supported by old cadres" comes from Hsinchu written by Zheng Xie, a poet in Qing Dynasty. The poem says: "Hsinchu is taller than the old bamboo branches, and it is all supported by old cadres." There will be new students next year, and ten dragons and grandchildren will go around Fengchi. " Hsinchu is taller than the old bamboo branches and supported by the old branches, which means that Hsinchu is taller than the old bamboo because the old branches provided shelter for it during its growth. In the poem, the poet uses "Hsinchu" and "Laogan" to describe the relationship between teachers and students. A person can surpass teachers and predecessors because of their upbringing and cultivation, thus expressing gratitude to teachers.