Bringing Nghe An OCOP products to the world Lesson 1: Exploiting indigenous "treasures"Lesson 2: Restoring and sublimating royal specialties Lesson 3: Eels “go” in containers; 5-star lanterns are present in 34 countriesLesson 4: Unlocking the potential of a remote area in the Southwest Final article: Affirming a solid direction, keeping up with the 4.0 era