Expectations are growing in the run-up to global climate talks in Germany this week that China is preparing to launch a national carbon trading scheme. Xi Jinping, China’s leader, said two years ago that Beijing would launch an emissions trading system in 2017 that would almost certainly become the largest of its type, eclipsing that of the EU. With time running out, government officials, industry experts and researchers at Chinese think-tanks say Beijing could announce the scheme at the two-week Bonn climate change meeting that opens on Monday, the Financial Times reports. The expectations come as Beijing signals its readiness to fill the gap in global climate leadership following President Donald Trump’s decision to withdraw the US from the Paris climate change deal. Problems have bedevilled China’s preparations to build a vibrant scheme that would allow the biggest corporate polluters to buy credits from those that do not emit as much. Serious questions remain over pricing and monitoring.