SHANGHAI, June 19 (Xinhua) — Livestreamed fashion week, up to 50 percent discount vouchers and more convenient group purchase options were some of the new features of this year's mid-year online shopping festival in Shanghai. The "618" online shopping fest that took place on June 18 was the first shopping spree after Shanghai eased COVID-19 curbs and resumed work and production, and retailers have seen a revitalizing trend. LIVESTREAM POWER After an initial postponement due to a COVID-19 resurgence, the Shanghai Fashion Week this year was held online from Friday to Sunday via Douyin, the Chinese version of TikTok, coinciding…