Comparison to Western “Professionalism”: In the West, one might talk about “professionalism” in the workplace. `正经` is a much broader concept. While it can certainly describe professional conduct, it also applies to one's personal life, character, and relationships. It’s about being an upstanding, respectable member of society in all contexts, not just on the clock. For instance, you could have a `正经的恋爱` (zhèngjīng de liàn'ài) – a “serious/proper relationship” – which implies commitment and honorable intentions, a concept not fully captured by “professionalism.” The negative form, `不正经 (bù zhèngjīng)`, is a common social critique, ranging from a playful jab at a friend telling a silly joke to a serious accusation of indecency or shadiness.