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A security guard later helped Xie process the payment with cash, the report said.
This is, imo, the most important part of the article. If we want more payments were made without using cash, we have to realize that some people, elderly in particular, probably will never adjust to that. The security guard in question is a hero imo, and we need people like him in every store if we want the transition to be as painless as possible. Also, every place with a sign "We accept Bitcoin" have to be always happy to accept cash as well. Only this way we can avoid unnecessary hostility towards its usage.
No, the most important line of the article is this:
A Jixi resident said the supermarket had different but poorly labelled lanes for customers who paid by cash or with their phones.
It's a nonstory.
The supermarket has different lanes for check-out just like here in Europe we have fast lane (under 10 products) and two types of cash-outs, one where you scan your products yourself and you do also the payment (which works only with a credit/debit card).