We went there during the holidays for dinner and was not impressed.
1) When we made the reservation, we asked for a duck dish that needs to be reserved; the waiter said they no longer make it; but when we get there, we were told they do make it as long as you call ahead. So whoever takes the reservation doesn't know what's going on.
2) The food was OK but not really that good; authentic Chinese dishes that you can get in Chinatown for half the price.
3) We ordered the Peking roast duck, $36; the server wraps them in Chinese pan cakes instead of letting us do it; but they are really slow; so after the first two, the rest are cold. (even the first two are just warm). And the quality varies, one of the ones I got has so many sauce in it, it is not edible.
In summary, might be one of the few authentic Chinese restaurant in the mainline, but don't think it's worth the high price and so so food. If you are visiting Philly, might as well drive 30 minutes to Chinatown and get something better.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.