Don't have high expectations for this drama, but its a decent filler drama that is very light. To be honest, the storyline was just not the best...at first I thought it was fine as a low-drama slow-romance story but the little plot towards the end just did not match the pace of the storyline. The only reason I have given this drama a passing rating was because of the actors and production (cinematography was decent with a good color balance and it seemed like they tried to avoid dubbing, which I appreciated).
One thing that I have not yet read in other reviews or comments:

While I appreciate a realistic slowness of romance and research (this 24-ep drama spans a few years with no "time skips"), it's just a bit disappointing to see how unrealistic they portray research. After seeing how realistic science can be portrayed in the likes of You Are My Glory, its quite disappointing to see this in 2021. Average labs look like the lab they call "gross and old" (in fact, that was a very clean and organized lab...other than the rat she saw). It is *never* okay to eat in a lab (maybe you can sneak in a snack into an engineering lab) but they always eat and bring food in? impossible with their "strictness"...leaving your waterbottle outside a lab could be standard procedure in a real lab. Also the questions they ask while they seem well on their way through development seemed really basic (especially towards the beginning). These are just some issues with the science part...and they could've consulted an undergraduate to know these things. I know its the dramaworld and there are many unrealistic situations, but I feel like these are basic things (I don't even want to talk about how they're conducting experiments) and I'm no where close to an expert.

Also some have commented on how unrealistic the online boyfriend thing was...but we have shows like MTV catfish so I don't think this storyline is out of the realm of possibility. Also, they don't start dating until later. They started off as internet friends who eventually developed feelings for each other.

TLDR: If this was a 5-min clip web drama or 40-ep long drama, I would've instantly dropped. But because its only 24 eps, its another excuse to see Jasper Liu and Zhou Yu Tong act. Also, its not a very dramatic or sweetness-overload drama so don't expect that.