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.