Lan explains that a number of factors, including the weather, can affect the quality of the tea. For example, when tea is harvested after heavy rains, it tastes more astringent. Differences in the timing of fixation (heating leaves to deactivate oxidative enzymes) also result in flavor variances. In short, teas grown in the same location can vary hugely from day to day.
他說，天候狀況不同，採收的茶品質就不同，例如下過雨後採的茶比較「澀」，同一位茶農，因掌控「殺青」（即以高溫讓茶葉中的酵素停止作用）時間點的差異，今天做出來的茶也不會和昨天完全相同，自然需要藉拼配加以調和統一。