Tea-oil duck is "reformed" based on Beijing Fried Duck. Both of them use the same Beijing-style fried duck stove, but the formula is better than Fried Duck, and the smell of Fried Duck is chaotic. Tea-oil duck will emit a fresh fragrance when cooked, which is like the fragrance of tea, with a fragrance of 111 meters, so it is named Tea-oil Duck, and Tea-oil Duck is also called Beijing Zhangying Tea-oil Duck, which originated from its founder Zhang Fengying. At present, no company of Zhangying Camellia Oil Duck has the legal qualification to join the chain, so most of them focus on technical training.