In the series within Deep In, Linlin states that Gao Zhun painted replicas of Giuseppe Arcimboldo's The Four Seasons, which depicts the four stages of life through portraits using plants, fruits, and vegetables corresponding to each specific time of year.
It's worth noting that Linlin only turns around when passing by the Summer one, which is meant to symbolize a person in her prime. At this point, the person is the most beautiful and the most vital. Interesting enough, the painting is the only one to include foreign plants not native to the land.
When Gao Zhun returns home after getting upset at Fang Chi, he remains stuck right after Summer right before Autumn, which represents stability and transitions.
But he also appears to be stuck in hell since he cannot accept the changes that are happening within him.
But what's even more interesting is the fact that Giuseppe Arcimboldo painted several copies of this set because they were so popular.
Many museums have one or two paintings, but the only complete set that survived is housed in the Louvre, yet that is not the original series. It was made about ten years after the first.
So, in a sense, they are all copies, just like everything Zhen Xin and Zhang Zhun do.
They are replicating a feeling or a moment.
But, at this point, does it matter what was the original?
They keep arguing that what they feel is because of the characters they are portraying, but the show has told us this is their third time acting with each other, regardless of how brief the previous times were.
So is their acting this great because of the way they feel outside of the scene or are do they feel this way about each other because of how well they are acting within the scenes?
Does it even matter which since even the replicas are valuable? The point still remains in the copies.
Doesn't make them less real.