Single-character trademarks are difficult to register, and are more likely to lack distinctiveness

Two- to three-character trademarks are the most common, easy to remember, and beneficial to subsequent market introduction

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Trademarks of 3-5 characters are easy to use and have more room to express meaning and avoid similarity

Trademark names are not longer as long as they are difficult to remember. The distinctiveness of the trademark is insufficient

I personally do not recommend registering a trademark yourself, nor do I recommend finding an agency. It is difficult to register a trademark. You can refer to trademark franchise (Chongqing Lu Laosha)