ken liu can absolutely write, but i would actually not recommend reading these all in one go. if you can, spread the stories out over a longer period of time, and read other stuff in between. reasons being:

1. the vast majority of these stories are. how do i put it. bummers? many of them deal with (real or fictionalised) atrocities, and most of the others are just sad or bittersweet in the the more usual sense.

2. ken liu likes to return to the same subjects, and a lot of the stories are thematically and structurally similar. 

neither of these are negatives per se, but if you read all fifteen in sequence, the whole thing runs the risk of simultaneously feeling relentlessly bleak and losing its punch a bit. i can't say i didn't enjoy this overall, but i was a bit fatigued by the end.

the collection is a mix of scifi and fantasy, and i preferred the scifi stories; a lot of the more fantasy-leaning ones read like historical fiction with a magical realism gloss, which just appealed to me less.