Living in the Dianqian Neighborhood of Huli District, Xiamen, 67-year-old Mr. Chen has made it a habit to take morning walks since retiring. With the rise of the sun, he, neatly dressed, strolls through the streets and alleys to explore the city. Lately, he has chosen a new route for his morning walks — the “Blue Ribbon”, a 23.6-kilometer-long slow-walking circular trail in Huli District. Along this scenic trail, he passes high-rise buildings and lush forests, and heads towards the blue coastline…