Alibaba's cave: a very famous story in the medieval Arabic literary masterpiece "Arabian Nights", which tells the story of a poor woodcutter Alibaba who accidentally discovered the treasure of a robber group on his way to chop wood and learned the password to enter the cave. A series of twists and turns followed, but the ending was perfect.

According to this, after "Alibaba's cave" was opened, the meaning was very clear, referring to the opening of the door to wealth.