Correct

云梯

/ yúntī / 
Strokes

Definition

escalade

Example

As a Noun

scaling ladder; extension ladder

1
Jiùhuǒ
救火
yúntī
云梯

firefighting ladder

2
Jiàshè
架设
yúntī
云梯

set up/erect/fix a scaling ladder

As a Noun

steps up to the top of the mountain