10,000 years ago, humans sought refuge and lived together inside caves. It was truly a world imagined by John Lennon in "Imagine," a world without concepts such as borders or ownership, where only the sky loomed above us.
That place must have been a home filled with pure familial love. For those who visit this world, I hope they can reconnect with such pure emotions and, in the real world, remember those feelings and live together with their cherished families.