The given diagrams illustrate how tea leaves are processed into five different types of tea: white tea, green tea, oolong tea, large-leaf black tea and small-leaf black tea.
The process consists of several stages, beginning with tea plants being grown and ending with the tea leaves being dried in an oven. Additionally, it is noticeable that all five types of tea follow the same initial stages of growing, harvesting and withering before undergoing different processing methods.
In the first stage, tea plants are grown until they mature. Once they have matured, the leaves are harvested and withered before being processed into different types of tea.
Regarding white tea, after withering, the leaves proceed directly to the drying stage without undergoing any further processing, after which the process ends. For green tea, after withering, the leaves are steamed to prevent fermentation. Then, the tea leaves are rolled and gently crushed. Finally, the tea leaves are dried in an oven to complete the production process.
To produce oolong tea, the leaves are rolled to reshape them. After that, the tea leaves undergo partial fermentation and are dried in an oven to complete the process. Regarding large-leaf black tea, after withering, the leaves are rolled. Then, the tea leaves undergo full fermentation and are dried in an oven to finish. Similar to large-leaf black tea, in the production of small-leaf black tea, the tea leaves are crushed instead of rolled, resulting in smaller pieces. They also undergo full fermentation and dried in an oven to complete the production process.