Spaces between Chinese and English
([\u4e00-\u9fa5]+)([A-Za-z]+)
Then use
$1 $2
Spaces between Chinese and digital
([0-9]+)([\u4e00-\u9fa5]+)
Then use
$1 $2
Spaces between Chinese and English
([\u4e00-\u9fa5]+)([A-Za-z]+)
Then use
$1 $2
Spaces between Chinese and digital
([0-9]+)([\u4e00-\u9fa5]+)
Then use
$1 $2