The difference between the English version of Pfizer and the Chinese version is that the English version of Pfizer only translates the Chinese version into English. These two are:

1, English version, emphasizes the cultural differences related to English-speaking countries. For example, the English version usually uses American spelling instead of British spelling. In addition, the English version also emphasizes the usage and meaning of words in phrases. Especially the words such as artists and family members closely related to English culture, the English version is usually expressed by English pronunciation.

2. Chinese version is more inclined to use English spelling and pinyin to pronounce.