老師 directly translates as “old teacher,” “old master,” or “old sage.”

Together, they are understood as “teacher.” When you think about that, also realize that with age comes respect in Asian cultures. So calling someone old is a term of respect (not like the way we mean it in English). You could replace “old” with “respected” and be closer to how this is meant in Chinese.

Teachers, in general, are more respected by their students and the population in China. When I was a teacher in China, I certainly felt that.

This term is also used for masters of certain fields. For instance, a master calligrapher would respectfully be addressed as a “teacher.” In this case, “master” and “teacher” are synonymous.

Other artists (especially those who are famous or accomplished) should be addressed with this term. Also, some martial arts schools use this term of respect for their masters/teachers/instructors.

This title is recognized in Japanese as "roushi" with the same meaning but it’s rarely used in Japan.

This is a term for “teacher” that is primarily used in Wing Chun martial arts schools.

In very old Buddhist context this can be “thaumaturge” meaning a worker of wonders and/or performer of miracles.

師父 means master in Chinese (occasionally used in Korean Hanja and Japanese). In the context of Martial Arts, this is the master and teacher who instructs students.

The second character by itself means father. Thus, you get the “Fatherly Master” translation. There's an old Chinese saying that goes something like, “One who is your teacher for one day is your father for life.”

Language notes: I've often seen this romanized as “sifu,” this is actually the Cantonese romanization. In Mandarin Chinese, it's “Shifu.” The pronunciation in Mandarin is actually like “sure foo” (using typical English pronunciation). There's an “R-sound” in there, which is not obvious from the romanization. Many martial arts studios incorrectly pronounce this like “she foo” (which is actually the Japanese pronunciation). In Cantonese, it sounds like “Sea foo” (almost like “seafood,” minus the “d” at the end).

師父 is kind of a weird selection for a calligraphy wall scroll; this entry is more for educational purposes. But you are welcome to buy it if it suits your circumstances.