There were no walls in the world that couldn't be seen through, especially not in the Primordial World, where immortals, mortals, cultivators, and demons all existed side by side, and information and transportation came in all sorts of forms!
This world might not have the internet or mobile phones, but it had all kinds of magical ways to send messages: spirit beasts, bronze sparrows, letters sent over a thousand miles, messages in dreams, or even divination. Communication relied on anything but shouting. And though there were no cars, trains, ships, or planes, there were just as many ways to travel: riding clouds, using the Five Elements escape arts, shrinking the land to a few inches, or simply flying on a sword or through the air.
So the rare and incredibly tempting business of Jiang Nüwa holding the Investiture of the Gods ceremony at Cuiping Mountain quickly spread through all sorts of channels. In certain circles, the news spread like a storm...
Word had it that Jiang Nüwa, who had presided over the Investiture of the Gods ceremony at Cloud Summit on Cuiping Mountain, had actually succeeded in drawing the Heavenly Dao's response. She had directly deified the cultivators and soldiers from both sides who had died in the wars Zhou had fought against Xiqi and whose souls had returned to the Investiture Platform?
For example:
Qin Wan Heavenly Lord, Zhao Jiang Heavenly Lord, Dong Quan Heavenly Lord, Yuan Jiao Heavenly Lord, Golden Light Holy Mother, Sun Liang Heavenly Lord, Heavenly Lord Bai Li, Yao Bin Heavenly Lord, Wang Bian Heavenly Lord, and Zhang Shao Heavenly Lord of the Interception Sect had been defeated and killed in the Ten Absolute Arrays by the Interception Sect's vice leader Daoist Randeng, the Twelve Golden Immortals of Kunlun, Daoist Lu Ya, and others. Yet