Su Wen's pulse should be weak. Smart house refers to the head. Looking at the pulse condition and five colors, we can see that there are more than five zang-organs and six fu-organs are strong and powerful, and the appearance and luster of people's eyes and head can best reflect the functional state of the five fu-organs, hence the name "Lingzhai". The essence of the five internal organs (or essence) will be in the head and face, which can best reflect the functional state of the viscera, hence the name (see Su Wen, the pulse should be subtle). Introduction to the head The head consists of two parts: the skull and the face. The skull contains the brain. The pulse is the blood mansion, the bone is the marrow mansion, the waist is the kidney mansion, and the chest is the mansion. The head is the wisdom palace, the brain is the Yuanshen palace, the knees are the tendons, and the gallbladder is the clean palace.