When Wu Changhua started her career as an English editor at China Environment News 28 years ago, she thought that environmental protection meant sweeping the streets and planting trees. Now, she has become one of Asia's leading scholars on climate change and a senior policy advisor. Through her journey in this field, Wu has witnessed China's role change on the international stage. She shared with China Plus some of her insights about the country's changing role in the world for our new series "Deep Dive: Talks with Chinese Internationals".