Whether it is being sung spontaneously by rural people working in the field or travelling or performed more formally at one of more than a hundred traditional Hua er festivals held annually in these provinces, Hua er is an important vehicle for expressing personal feelings in a social setting and cultural exchange across ethnicities, as well as a popular rural entertainment.
And many electric utilities have facilities that create hydrogen power, but consumers can't just pull in with a fuel-cell vehicle and say, "Fill 'er up!"