Chinese characters
A commonly seen example is the double happiness symbol Xi , formed as a ligature of Xi Xi  and referred to by its disyllabic name (simplified Chinese: Shuang Xi ; traditional Chinese: Shuang Xi ; pinyin: shuangxi). In handwriting, numbers are very frequently squeezed into one space or combined - common ligatures include Nian  nian, "twenty", normally read as Er Shi  ershi, Sa  sa, "thirty", normally read as San Shi  sanshi, and Xi  xi "forty", normally read as Si Shi  "sishi". In some cases counters are also merged into one character, such as Qi Shi Ren  qishi ren "seventy people". Another common abbreviation is Men  with a "T" written inside it, for Wen Ti , Wen Ti , wenti ("question; problem"), where the "T" is from pinyin for the second syllable ti Ti . Since polysyllabic characters are often non-standard, they are often excluded incharcter dictionaries.
What is a commonly seen example?
double happiness symbol
A commonly seen example is the double happiness symbol Xi , formed as a ligature of Xi Xi  and referred to by its disyllabic name (simplified Chinese: Shuang Xi ; traditional Chinese: Shuang Xi ; pinyin: shuangxi).
a commonly seen example