Two lovers picnic in London, Britain on Sept. 13, 2016. According to BBC News, the Britain's warmest September day since 1911 has been recorded on Tuesday. (Xinhua/Han Yan)
Two lovers picnic in London, Britain on Sept. 13, 2016. According to BBC News, the Britain's warmest September day since 1911 has been recorded on Tuesday. (Xinhua/Han Yan)