The name Eng in Chinese / Japanese...

英 is the name Eng in Chinese (Mandarin).

エング is the name Eng in Japanese Katakana.

Note: Because this title is entirely Japanese Katakana, it should be written by a Japanese calligrapher.

黑旗門 is often romanized as “Hek Ki Boen” in Cantonese, this is the title for a certain branch school of Wing Chun or Eng Chun martial arts.

This is the surname Ng in Chinese.

吳 is sometimes romanized as Ang, Eng, Ing and Ong in the United States and Ung in Australia. In Mandarin, 吳 is usually romanized as Wu, but sometimes Woo. In Vietnamese, 吳 can be the Ngô surname.

Be careful, as 黃/黄 is another surname character that also romanizes as Ng and other variants noted above.

詠春拳 is the title for the “Wing Chun” school of martial arts but with the addition of the character for “fist” at the end. So this is “Wing Chun Fist” or literally “Singing Spring Fist.”

There are lots of alternate Cantonese romanizations for this, such as “Wing Chun Kuen,” “Wing Tsun Cheun,” “Eng Chun Pai,” and “Wing Ceon Kyun.” The characters are the same; just the lack of a standard Cantonese romanization means that people make up their own based on what they think it sounds like.