The production of fully fermented black tea can nowadays be controlled by computer, but semi-fermented, high-quality teas must be observed and tested constantly, and the entire process, from picking to production, is manual and cannot yet be computerized.
尤其不發酵的綠茶、全發酵的紅茶，如今都可以用電腦控制製茶，但半發酵的高級茶必須要隨時觀測，從採茶到製程都要使用人工，無法用電腦來取代。