Literature Reference: 聿，所以书也。——《说文》；谨，慎也。——《说文》 'Yu' refers to writing, as stated in 'Shuowen'; 'Jin' means caution, as explained in 'Shuowen'.
聿: The role of smooth succession.
谨: Prudence, meticulousness. Caution, carefulness.
Meaning: Yu signifies writing, while Jin represents caution, symbolizing literary talent and carefulness.