△ Chinese pinyin Luo or Luo
△ Webster's pinyin Roman-Ting or Mann-Luo Ting
△ English spelling Lo Man-ting or Man- ting Lo
△ abbreviated form M T Lo
All of the above can be used as legal names for formal occasions. If you want to take another alias, you can choose one you like from common English names, which has nothing to do with your original name.