Europe hopes China's upcoming Communist Party Congress will help to speed up the country's market reforms, the European Union's ambassador to <br/>China said that calling Chinese criticism of an EU plan to screen foreign investment 'unreasonable'. <br/><br/>European Commission chief Jean-Claude Juncker earlier this month proposed an EU-wide investment screening mechanism amid growing concern in Europe about acquisitions by Chinese state-controlled or state-financed companies. <br/><br/>China's Foreign Ministry has expressed concern over the plan, saying the losses from such trade and investment protectionism would outweigh the gains.