Passengers take a virus-prevention-themed train on Metro Line 1 yesterday. Shenzhen Metro saw 2.32 million passengers for a highest single-day volume last week. With the increasing number of train passengers, Shenzhen Metro Group has put theme trains into operation to increase riders’ awareness of COVID-19 prevention methods and to remind them to practice thorough self-care. The theme trains can also be found on lines 3 and 5. (Shenzhen Daily, Su Yuchen)