Warp: paper zhǐ, table zhuō ū, ten Shū, ten SH ū; Warp is a consonant formed by the tip of the tongue tilting upwards, touching the front of the hard palate and obstructing the airflow. For example, the initials zh, ch, sh, r(r is a vowel) in Mandarin.
Extended data:
When the tip of the tongue is pronounced, the tip of the tongue tilts upward and clings to the front of the hard palate, and the soft palate rises, blocking the nasal passage and the vocal cords do not vibrate. The weak airflow pushes the obstruction on the tip of the tongue through the narrow gap and squeezes it out, rubbing it into sound.
A flat tongue sounds flat, while the tongue is upturned. A flat tongue sounds as if the tongue is flat, touching or close to the back of the upper teeth, as well as Z, C, S and so on. Are they all flat-tongued except zh, ch, sh and R?