Sino-Portuguese relations refer to the diplomatic and economic interactions between China and Portugal. These relations date back to the 16th century when Portuguese explorers first arrived in China, establishing trade routes and cultural exchanges. The most notable connection was through Macau, a former Portuguese colony that served as a significant trading post. In modern times, Sino-Portuguese relations have evolved, focusing on trade, investment, and cultural cooperation. Both countries have engaged in various agreements to enhance economic ties, with China being one of Portugal's largest trading partners. The relationship continues to grow, reflecting mutual interests in commerce and cultural exchange.