How long does it take one to find an ideal job? For Wang Ximin, head of Xishuangbanna Tropical Botanical Garden's environmental education team, it is 12 years.

Before becoming an ardent advocate and lecturer of environmental education, the 40-year-old man worked as a middle school teacher, police officer and NGO project manager.

"I was seeking a job in which I could share my love of nature with more people and make them learn and love nature," he says.