This drama actually has a fully fan translated book. After FL's accident, she goes back to her 19 yo self. She falls to the same pit and wakes up, turns out the ML used his connections to acquire a new experimental medicine to stimulate FL's brain to wake her up from coma. Things that happened to her inside the dream was due to ML talking to her while she's in coma. The side effects of the medicine is that she gets to remember some small details subconsciously stashed by her brain to the back of her head because they were unnecessary and it merged perfectly with ML's narrations while she was in coma. So it probably has nothing to do with censorship.
I'm just starting this drama and I'm wondering why they didn't stick to the original plot since all they had to do was remove the smut. At the same time, it's also reasonable since the novel had no drama or anything. Most of it was fluff.
If you're wondering what the original plot is like, ML never liked Mo Zixin, the latter purposedly schemed to let FL hear ML confessing to him when he never even confessed to her. MZX even cheated on FL's brother. As for Li Chongwen, he was not FL's ex or enemy. Before coma, FL heard that LCW got stomach cancer, partly because he used to skip meals in college because he was poor, so in her dream, she tried to feed him as much as he could. Also, FL's father is alive and well. ML fell for FL in the original timeline when her brother chased after MZX. He thought that Lu Xun was his biggest rival, so he bribed his sister to guard Lu Xun on his behalf and prevent the latter from having a solo moment with MZX. Lu Xun thought FL was chasing after him... and stuff.
There's a lot of other differences, which I assume they added in the drama to add drama.