Fussy sense is quite hard to grasp. It refers to someone who is vitally choosy and nitpicking. A persnickety individual usually nitpick and has high
standards when it comes to expectations and excellence. Their meticulousness can be viewed as laudable, but it can also lead to unwarranted criticism and unnecessary dissatisfaction. Being persnickety is often linked to thorough focus on specifics but can also be seen as a type of obsessiveness.
persnickety in Traditional Chinese Cambridge Dictionary
