This is the 4862nd most frequent Chinese word.
行會
A "guild" or "trade association."
In this sentence, '行會' refers to guilds or associations that play a role in the urban economy or infrastructure.
行會是城市发展的重要组成部分。
Guilds are an important part of urban development.
Here, '行會' means a professional association or organization where individuals gather to learn or improve specific trade skills.
我加入了一个行會以提高我的技能水平。
I joined a guild to improve my skills.
'行會' in this context relates to historical groups or societies formed to support and regulate artisans and craftsmen.