Lung meridian and respiratory tract diseases, such as cough, asthma, hemoptysis, bone-fever with tidal heat, night sweats, as well as bronchitis, bronchial asthma, pneumonia, tuberculosis, urticaria, skin itching, etc.

On the back, below the spinous process of the 3rd thoracic vertebra, 1.5 cun lateral to the midline. (This acupoint is bilateral, one on each side.)

Sure, I will translate the provided instructions into English.

Step 1: Sit up straight and lower your head;
Step 2: Identify the posterior median line: that is, a vertical line made in the center of the back;
Step 3: On the posterior median line, there is a noticeable protrusion on the vertebrae at the junction of the neck and upper back;
Step 4: This protrusion is the spinous process of the 7th cervical vertebra, which can turn with the neck's left and right movements;
Step 5: Push down vertically from the spinous process of the 7th cervical vertebra for three vertebral spinous processes to reach the spinous process of the 3rd thoracic vertebra;
Step 6: Draw a horizontal line from the spinous process of the 3rd thoracic vertebra to the inner edge of the scapula, and the midpoint of this horizontal line is the location of this acupoint.