Use Emoji Keyboard on MAC OS X

1. On text document, click on where the emoji will appear.

2. Press 'command' + 'control' + 'space bar' key.

3. On 'Characters' palette, click on 'Character Viewer' icon located on the top right.

4. Click on Emoji on left hand panel > Click on desire sub-category > Click on desire emoji

5. To close, click on 'x' located on top left.

URL: https://support.apple.com/en-us/HT201586

Enable Chinese Pinyin Input on MAC OS X

1. Click on Apple icon > System Preferences... > Language & Region

2. Click '+' under Preferred languages:

3. Highlight '简体中文 － Chinese, Simplified' > Add

4. Choose 'Use English' on 'Would you like to use Chinese (Simplified) as your primary language?'

5. Select 'Pinyin - Simplified' > Add Input Source

6. Click Keyboard Preferences...

7. Check 'Show Input menu in menu bar'

To enable keyboard shortcut to switch between input:

8. Click Keyboard Preferences... > Shortcuts > Input Sources

9. Check 'Select the previous input source' > Double click on the current pre-defined shortcuts

10. Hold the 'Command' key + 'N' key > The shortcut key had changed to 'Command'+'N'

URL: http://pinpinchinese.com/blog/how-to-use-pinyin-to-type-chinese-mac/