Regular Expressions 101

Explanation
Pro

(?i)applies the following effective flags to the remainder of the pattern: gi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Character Class[A-Z]*

*matches any number of characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case insensitive)

Character Class[\x{4300}-\x{9fff}]+

+matches at least one character from the set below:

\x{4300}-\x{9fff}one character from 䌀 (17152₁₀) to 鿿 (40959₁₀)

Positive Lookahead(?=\s+[A-Z]*[\x{4300}-\x{9fff}]+)

\s+any whitespace character, repeated at least once

Character Class[A-Z]*

*matches any number of characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case insensitive)

Character Class[\x{4300}-\x{9fff}]+

+matches at least one character from the set below:

\x{4300}-\x{9fff}one character from 䌀 (17152₁₀) to 鿿 (40959₁₀)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

25 tokens

(?i)[A-Z]*[\x{4300}-\x{9fff}]+(?=\s+[A-Z]*[\x{4300}-\x{9fff}]+)

New

山牆 山墙,shan1 qiang2,gable

B型超聲 B型超声, B xing2 chao1 sheng1,type-B ultrasound

$0,

山牆 山墙,shan1 qiang2,gable

B型超聲 B型超声, B xing2 chao1 sheng1,type-B ultrasound