Correct

开馆

/ kāi guǎn /
Strokes

Definition

opening

Example

As a Verb

(of a library, museum, gymnasium, etc) open to the public

1
shūguǎn
图书馆
diǎn
kāi
guǎn
  

The library opens at eight o'clock.

2
Kāiguǎn
开馆
shíjiān
时间

opening hour

3
Kāiguǎn
开馆

opening day

As a Verb

open a diplomatic or consular mission abroad