Demanding sense is rather tricky to comprehend. It refers to someone who is exceptionally meticulous and nitpicking. A persnickety individual tends to be meticulous and sets the bar high when it comes to expectations and excellence. Their fastidious nature can be perceived as commendable, but it can also intensify extreme censure and unnecessary dissatisfaction. Being persnickety is regularly related to detailed focus on specifics but can also be seen as a manifestation of perfectionism.

persnickety in Traditional Chinese Cambridge Dictionary