US Treasury Secretary Janet Yellen speaks about the need for "strengthening communication" between her country and China, adding that it is "key to building a healthy US-China economic relationship". Yellen also jokes about her "chopstick skills", after Chinese social media users and a state media outlet praised how she wielded the utensils during a meal. Yellen's trip marks her second visit to the world's second-largest economy in less than a year. IMAGES AND SOUNDBITES