快速回答：”Red color group (Tứ Sắc)”的意思是One of the four Tứ Sắc color groups, used to classify pieces for legal combination checks.
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Red color group (Tứ Sắc)
One of the four Tứ Sắc color groups, used to classify pieces for legal combination checks.
快速回答：”Red color group (Tứ Sắc)”的意思是One of the four Tứ Sắc color groups, used to classify pieces for legal combination checks.
One of the four Tứ Sắc color groups, used to classify pieces for legal combination checks.