J Q X Z C S is pronounced as follows:

J: When pronouncing, the tip of the tongue is pressed against the lower incisors, and the front of the tongue is close to the hard palate. Air rushes out of the narrow gap and rubs into sounds.

Q: When pronouncing, the front of the tongue is attached to the hard palate, and the airflow breaks through the obstacle of the root of the tongue and rubs into a sound.

X: When pronouncing, the tip of the tongue is pressed against the lower incisors, and the front of the tongue is raised close to the hard palate, forming a narrow gap, from which air flows out and rubs into sounds.

Z: When pronouncing, the tip of the tongue is pressed against the back of the upper incisors to block the airflow, so that the weaker airflow can break through the obstruction of the tip of the tongue, squeeze out from the narrow gap and rub into sound.

C: When pronouncing, the tip of the tongue is pressed against the back of the upper incisors to block the airflow, so that the strong airflow is squeezed out of the seam and rubbed into sound. ?

S: When pronouncing, the tip of the tongue clings to the back of the upper incisor, leaving a narrow gap, and the airflow is squeezed out from the narrow gap of the tip of the tongue and rubbed into sound.