I've long resigned from expecting transcendental food experiences in China. IMO, inconsistency is a primary characteristic of Chinese food in China (and followed closely by indifference). Better Chinese food experiences, quality-wise but also in general, are found in Taiwan and Hong Kong.

In Chendgu, to try the city's street snacks, I would recommend Long Chaoshou (龍抄手/龙抄手) on Chunxi Road in the heart of the commercial district. I'm not sure if it's still state-owned, but it originated in the socialized era when individual street vendors were forced to give up ownership and consolidated into massive eateries like this. I don't mind the food hall atmosphere and curt service. The food isn't all that spectacular, either. But it's a relic, which gives it some meaning.

Below is the 12-dish sampler (RMB 38 as of 2015 Nov):