The human restricted area–31-07-2018 augustus 6, 2018 0 Door Chuiwei Yeung Holland on bicycle – The human restricted area. This is a natural lake reserve, a lot of wild duck, swans and other birds flock on the lake, indescribably of natural beauty. 自行车上的荷兰–人类禁区 经过这个自然湖泊保护区,成群的野鸭天鹅和其它飞禽在湖上游戏,难以形容的自然和谐之美。