China's structural reforms are improving the quality of the country's economic growth and helping reduce the risk of a hard landing, Premier Li Keqiang told the opening plenary of the World Economic Forum in Tianjin Wednesday. "Instead of adopting strong economic stimulus or easing monetary policy, we have vigorously promoted reform and economic readjustment," he said. Premier Li also pledged to maintain a policy of stability towards foreign investment amid increasing criticism over the country's protectionist measures. ''We will improve our business environment to attract more foreign businesses and investment," he said. China has embarked on an antitrust campaign in recent months, investigating dozens of foreign enterprises including heavyweights like Microsoft and Audi. A report by the U.S.-China Business Council released last week showed that 86 percent of its member companies are concerned about Beijing's anti-monopoly enforcement activity, with 30 percent fearing it will be used against them.