Written in English is:

Tenzin

If it is in an English-speaking country, the general writing is: Dan? Zeng (first name, then surname).

When people in China speak and write their names in English, they should follow the principle of surname first. For example, Yao Ming, a famous basketball player, wrote Yao Ming in English. This principle has been widely accepted by English-speaking countries.

Note: Please ask the questioner to respect the knowledge and labor paid by the respondent and adopt the answer in time!