Chinese authorities reportedly stopped a Solana-related event planned for Shanghai after alleging unauthorized promotional activity involving domestic entities, according to Financial News, a state-backed publication. The report, citing an unnamed official linked to the People’s Bank of China (PBOC), said Solana promoted its brand through local channels, including advertisements placed in Shanghai’s Lujiazui financial district.The incident underscores that China’s stance toward crypto is not limited to trading activity. Regulators appear to extend scrutiny to marketing, fundraising-style promotion, and any crypto-related services that could be interpreted as facilitating digital asset issuance or exchange.Key takeawaysFinancial News reports Shanghai authorities halted a Solana…