In some foreigners eyes'', the learning of Chinese has become the most difficult thing for them. The tones of Chinese and Chinese characters all seem to be a difficulty. Then what has made the learning of Chinese difficult?
鍦ㄤ竴浜涘栧浗浜虹湅鏉ワ紝瀛︿範涓鏂囧凡鎴愪负浠栦滑鏈
