the pace of life in beijing is stressful

pace n. 步伐,速度
life n. 生活
stressful adj. 压力大的
题外话：说一下 of
The map of China in this shop is very expensive.
这个商店的中国地图很贵.
句子的主干是: 地图很贵.

The pace of life in Beijing is stressful
主干是：The pace is stressful.
所以,你的句子有偏差.
可以说 The pace is fast.
也可以说 The life is stressful.
完毕.