Why did zheng he give gifts to countries he visited?

Zheng He gave gifts to the countries he visited as a means of showcasing the wealth and power of the Ming Dynasty, fostering goodwill, and establishing diplomatic relations. These gifts were intended to create a favorable impression, promote trade, and encourage alliances, as well as to demonstrate China's cultural superiority. By presenting valuable items, he aimed to convey respect and strengthen ties with foreign leaders, facilitating peaceful interactions and mutual benefits.