A man and his daughter in panda costumes collect tea leaves fertilised by panda droppings at a tea farm in Ya'an, Sichuan province March 3, 2015. Such tea is healthy because pandas absorb just 30 per cent of the nutrients from their diet of wild bamboo, and pass on the remaining 70 per cent to plants via the high-quality organic compost. The special panda tea will be sold for 220,000 yuan ($35,051) for just 500 grams, making it one of the most expensive tea in the world. [Photo/Ecns.cn]