Not sure where U see the word "距", but it does not mean "He/She" (佢). 距 usually means distance (距離). However, the pronunciation of "He/She 佢“ is same to "距”. As the others said, maybe someone would use 距 instead of 佢 on internet chatting / sms etc becos of easily typing or other reasons. 佢嘅 ＝ HIS/HER We use it as spoken language. 他(她)的 = HIS/HER we use it literary or as written language. for example, "His cup" In Cantonese, ppl say "佢嘅杯“ but if ppl have to write this down in a proper way (i don mean for internet chatting or sms) then ppl write "他的杯子” in Mandarin, ppl say and write also "他的..."