A photo illustration of a WeChat user scanning a QR code to retrieve a digital red envelope on the WeChat app on a mobile phone during the Chinese New Year period in Beijing, China, 30 January 2017. Digital red envelope, a service provided by the mobile phone app WeChat to represent &#039;hongbao&#039; envelopes filled with money that Chinese traditionally gift each other for good luck during the Chinese Lunar New Year, have gained popularity. According to reports, 32 billion packets have been sent and received by 516 million people over the six-day celebration of the Lunar New Year in 2016 through the app, ten times more than in 2015. Around 100 billion envelopes are expected to be sent during the celebration period of the year 2017, according to forecasts.  EPA/STR