France warned its citizens in China to maintain utmost vigilance after a Chinese man injured a French national in a blade attack in Shanghai. The 27-year old attacker, surnamed Mao, attacked the French national on Wednesday after a Chinese national was shot dead in Paris, Shanghai police said. <br/><br/>The victim was slightly injured on his neck. In response to the incident, the French Consulate in Shanghai issued a warning to its citizens in China, asking them to be on guard. It is not clear whether the attack on the French national was connected to the death of Chinese national in Paris.