The husband and wife team of Joseph Richter and Merrylu Richter perform equestrian skill during the 42nd Monte-Carlo International Circus Festival in Fontvieille, Monaco, on Jan. 18, 2018. The 11-day circus festival opened on Thursday, with 160 artists from 17 countries and regions bringing to the audiences 30 performances including circus, acrobatics and magics. (Xinhua/Chen Yichen)