Natural incents
The Chinese character for tea is and it is pronounced differently in various Chinese dialects, i.e. in Sichuan/Yunnan tea is pronounced as "Cha" and in Zhaozhou region as. Based on the pronunciation by the West, we can almost picture out via which trade route tea was introduced to their region. For example,

-- Central Asian countries pronounce tea as "Cha" because tea was one major item they imported from China via Silk Road started from Yunnan, Sichuan or Hunan since Han Dynasty "

-- North East Asian countries, i.e. Japan and Korea, also as "Cha" because they learnt and brought back tea & tea culture via the Central- North region in China.

-- In the early 17th century Dutch introduced tea to European Continent via ocean silk road, and later followed by British from Fujian province, so they adopted the local dialect phonetic as