differ place the mandarin speaking might differ.
china ppl speak aircon as "kong tiao"空调, doctor as "da fu"大夫
other place's chinese speak aircon as "leng qi"冷气 , doctor as "yi sheng"医生
yi sheng 医生 is not cantonese, is mandarin. but china ppl will not use "yi sheng"医生
i got a china friend, sometime he dono what i am talking.
