Old Lan Xichen was summoned to another world by his obsession with a piece of jade. Yao is still alive. It's just that sixteen-year-old Meng Yao doesn't know him yet.
After being rescued by 16-year-old Meng Yao
He put on a mask and claimed to be Lan Xichen's "brother who had a falling out" and was not allowed to see anyone (Ayao, don't mention my affairs to anyone!). He tilted his head and stayed by his side.
He protects him secretly, teaches him, and protects him from disasters.
At the same time, he approached the young Lan Xichen as a casual cultivator and gave him information to help him avoid trouble.
Until the tragedy changes
He knew his time was running out.
That piece of jade was connected to his body.
When the jade is put together, it is when he disappears. Then…
Two Lan Xichens, one secret.
The moment the mask was split open by his younger self, the truth was revealed.
He also left. He saved Jin Guangyao and himself.
Intention: Even though we know we have to say goodbye eventually, we still try our best to save each other