By now the left thumb can press a string to the board and slide along it. This lesson hands the same job to the ring finger and the middle finger — the two fingers that do most of the left hand’s real work once you reach actual pieces.
What this lesson teaches
A stopped tone (按音, àn yīn) is any note you make by pressing a string down onto the surface of the instrument, shortening its speaking length and raising its pitch. The thumb is strong and obvious; the ring and middle fingers are where control and stamina come from. Getting them comfortable now is what lets you play a melody line later without your hand cramping.
Watch for three things in the video:
- Where the finger presses. The fingertip lands just behind a hui (徽) marker for a stopped note, not on the marker itself for a harmonic. The dots are your map.
- How hard you press. Only enough to stop the string cleanly against the board — no more. A common beginner habit is to mash the string down, which tires the hand fast and dulls the tone.
- The angle of the finger. A slightly upright fingertip gives a clean contact point; a flat finger smothers the string and buzzes.
Common mistakes
- Pressing with the pad instead of the tip — kills sustain and makes sliding (the next lesson) much harder.
- Death-gripping the string. If your forearm aches after a minute, you’re using far more force than the note needs. Back off until the tone is just clean.
- Ignoring the ring finger because it feels weak. It is weak at first — that’s exactly why this lesson exists. Give it its reps now.
What to listen for
A good stopped tone is solid and singing, with no buzz and no muffling. Play the same note with the thumb and then with the ring finger and try to make them sound identical — that’s the goal. When the ring and middle fingers can match the thumb’s tone, you’re ready to start shifting them along the string in Lesson 17.