How many years did it take to cut a passage through Mount Yulei?
举一反三
- How many years does the Rhus generally grow before it is cut for lacquer? A: 3 years B: 4 years C: 8years
- How many countries did Zheng He visit in about 30 years?
- 中国大学MOOC: For how many years did Trojan War last？
- After how many years did the social media post find the family?
- How long did the construction of the emperor’s tomb take? () A: 11 years B: 17 years C: 70 years