First, we need to properly face the disease of bronchiectasis. Many patients with bronchiectasis are like normal people, without any clinical manifestations. Therefore, if these patients lead a regular life, it does not affect their quality of life or survival rate, so they are not considered severe cases. However, some patients experience repeated infections that worsen and may involve coughing up blood and progressive decline in lung function. These cases are relatively severe. Nevertheless, we can intervene effectively to slow the progression of the disease. Therefore, the severity varies among different patients with bronchiectasis.