竹子前四年只长三厘米，第五年起每天疯长三十厘米。别嫌当下回报小，你只是在扎根，根深了，高度自然来。 Zhúzi qián sì nián zhǐ zhǎng sān límǐ, dì wǔ nián qǐ měitiān fēng zhǎng sānshí límǐ. Bié xián dāngxià huíbào xiǎo, nǐ zhǐshì zài zhā gēn, gēn shēn le, gāodù zìrán lái. Bamboo grows only three centimeters in the first four years, but from the fifth year on, it shoots up thirty centimeters every day. Don’t complain that the current return is small—you are just taking root. Once the roots are deep, the height will come naturally.