C457 Preparations before leaving
"Yes." Shang Huaiyue replied. After a long period of silence, she took out two little wood box s from the cupboard and handed them over to Shang Zhiqing.
He explained: "You and your sister each have one wood box. I wanted to give it to you a long time ago, but I never had the chance to give it to you. Since we're leaving tomorrow, why don't we take it with us? "
This was the Longevity Lock