Correct

参天

/ cāntiān /
Strokes

Definition

reach high to the sky/tall/of great height

Example

As a Verb

(of trees) reach to or touch the sky; tower

1
cāntiān
古木参天
  

Ancient trees tower to the skies.

2
Cāntiānshù
参天大树

towering trees

Related

拔地参天