For once, I'll jump to the conclusion: this is a M-A-S-T-E-R-P-I-E-C-E !!!
First of all, the message is so deep that it simply humbles at least 90% of other dramas (and basically every Western series ever - but well, that's easier).
The script works like a Swiss clockwork, seriously; and seeing how this drama consists of 40 episodes of around 45' each, that alone is quite a feat! You laugh, you cry, you learn, etc....the whole nine yards! Or rather, Yin & Yang and all 24 solar terms!
The characters are so well-written and tridimensional that when you finish watching the series, you feel like you're saying goodbye to a group of friends!
The acting is simply superb. At this point I usually give three "honorable mentions" but here it's hard to name just three, one would want to praise *all* of them with a virtual standing ovation! Anyway, traditions must be kept, so let's say I'll stand a little longer for Jiang Shan, Zhao Lu Si and my beloved Dai Lu Wa.
The music is just lovely and adds greatly to the viewing pleasure.
As for the "packaging" (direction, editing, photography, etc.), that's top-notch too.
What's not to like? Perfect 10! Goes instantly into my top-5 of all times! ^_____^