Scavenging in Ancient Times, I Became the Dao Ancestor by Picking Up Scraps

Why did the ancient gods all fall at once? What kind of core law is hidden in the “ownerless junk heap” deep within the Divine Ruins? Is some higher-dimensional being manipulating the three clans' struggle for supremacy? The “junk appraisal eye” is actually an innate divine power of an ancient Dao Ancestor, so why did it end up in the hands of a good-for-nothing?