Despite sales increasing a mere 0.02%, rotating chairman Eric Xu struck an upbeat tone in the company's annual New Year's letter, where he revealed the figure.That represents a tiny increase from 2021, when revenue hit 636.8 billion yuan, and marked a 30% year-on-year sales tumble as the U.S. sanctions on the company took effect.In 2019, the U.S. Trump administration imposed a trade ban on Huawei, citing national security concerns, which barred the company from using Alphabet Inc's (GOOGL.O) Android for its new smartphones, among other critical U.S.-origin technologies.The company began investing in the electric vehicle (EV) sector as well as green technologies around the time sanctions took effect."The macro environment may be rife with uncertainty, but what we can be certain about is that digitisation and decarbonisation are the way forward, and they're where future opportunities lie," said Xu in the letter."