How to open the system built-in dual input method under Mavericks?

Many old users will use an ancient input Method-"Double spell", Apple system has always been the default pinyin input method, but starting from Mavericks 10.9, the system has been the default support for double-spell, that MACGG how to open it?

Open "System Preferences", "keyboard"

Select "Input source" tab bar, select "Pinyin" on the left, then tick "use double spell".

In this explanation is the Apple system built-in only double-spell is "smart ABC" version

Finally, maybe you think why not install a third-party input method? Very simple, third-party input method will always appear inexplicable problems