Who went to China with Marco Polo?

It is his father Niccolò and uncle Matteo.

In 1271 AD, when Marco Polo was 17 years old, his father and uncle took the pope's reply letter and gifts, and led Marco Polo and a dozen traveling companions to the east. They entered the Mediterranean from Venice, then crossed the Black Sea, passed through the two river basins and arrived at the ancient Middle Eastern city of Baghdad. From here to Hormuz, the outlet of the Persian Gulf, they could take a boat directly to China. However, something unexpected happened at this time. When they were paying for things in a town, they were targeted by robbers. The robbers caught them while they were sleeping at night and imprisoned them separately. In the middle of the night, Marco Polo and his father escaped. When they called for reinforcements, the robbers had already left, and except for the uncle, their other traveling companions were also missing. Marco Polo, his father, and uncle came to Horschutz and waited for two months, but did not encounter a ship to China, so they had to take the land route instead. This is a road full of difficulties and obstacles, a road that scares away even the most ambitious travelers. They headed east from Hormuz, crossed the desolate and terrifying Iranian desert, and crossed the steep and cold Pamir Plateau. Along the way, they traveled through mountains and rivers, overcame the problems of disease, hunger and thirst, and escaped the invasion of bandits and beasts. Finally, they arrived Xinjiang, China.