2. At that time, people didn't know Lingyunmu, so they waited for Lingyun to start to grow taller. -(Tang) Du Xunhe's Komatsu
3. The jade test takes three days, and the material identification takes seven years. -(Tang) Bai Juyi's Five Disclaimers Article 3
4, the ancients learned nothing, suitable for all ages. -(Song) Lu You's Reading on a Winter Night.
5. Once you climb to the top of the mountain, you will see that other mountains are dwarfed under the sky ...-Du Fu's "Looking at Yue"