You are diligent and do anaerobic exercise for 2 hours every day-this is equivalent to aerobic exercise.

Strength has increased, muscle strength has increased, but the size of muscle seems to have not changed, right?

Muscle enlargement takes time besides exercise and nutrition. Anaerobic exercise should be changed to three times a week, and each time should not exceed one hour. At other times, aerobic exercise should be the main exercise. When muscle mass increases and endurance needs to be increased, increase the number of anaerobic exercises in a week.