Our ancestors explained day and night with the tale of "birds carrying the sun aloft." Chen Fenwan cherished this intuitive innocence. This reunion in Chengdu, Fenwan connected this imagined "flight path" with the "Sun Bird": encircling into a wheel, time and light perpetually lifted above the city. The wall's cyclical progression unfolds—a central "solar nucleus" radiating outward into birds and light. This forms both the mythical flight path and Chengdu's pulse: mutually supporting each other, allowing light to perpetually renew itself amidst the city's mundane rhythms.