Final answer:
Marco Polo embarked on an expedition to China in 1271 and spent over 20 years in the country. His book, Travels, provides detailed accounts of his experiences in China.
Step-by-step explanation:
Marco Polo's expedition to China is well-documented in his book Travels. In 1271, Marco Polo, along with his father and uncle, set sail from Venice and traveled to the Mongol Empire, where they met Kublai Khan. Marco Polo spent over 20 years in China, learning the language and exploring the empire. His detailed accounts of the landscapes, culture, and customs of China provided valuable information to Europeans at the time.