Both dramas have the female lead travelling to ancient China to find true love. Chemistry wise it’s the same but the producers on Mrs. Right are more generous in terms of the kisses and skinship between the leads. Mrs. Right also gives you a happier, light hearted feeling after you watch the BEST HAPPY ending for time travelling.
Poisoned ML with a "uniqueness" regarding the FL (in Meet You she can fix him, in MFMR his blood causes her transformation). Both couples meet and end up in a relationship very quickly then a bit later truly fall in love and are devoted to each other. Both are shorter, light, and mostly fluffy romances.