lǎo / shī / xiān / jiāo / wǒ / men / tiáo / zhěng / hū / xī / zài / dài / dà / jiā / zuò / tǔ / nà / liàn / xí

老师先教我们调整呼吸，再带大家做吐纳练习。

The teacher first taught us to adjust our breathing and then led us through a breathing exercise.