Which acupuncture technique involves the rapid thrusting of needles to enhance treatment effects?

The technique that involves the rapid thrusting of needles to enhance treatment effects is known as needle manipulation. This method is often employed to increase the stimulation of acupoints, which can lead to more effective pain relief and a stronger therapeutic response. Needle manipulation may include various techniques such as taping the needle, quickly lifting and thrusting the needle, or using twisting motions to enhance the flow of Qi and blood in the body.

In the context of acupuncture, this technique is utilized to address different patterns of Disharmony and to achieve specific clinical goals. By dynamically adjusting the position and movement of the needles, practitioners aim to enhance the influence that the acupuncture treatment has on the patient's health.

The other options, such as heat therapy and gua sha, refer to different forms of treatment that do not involve the rapid thrusting of needles. Shallow needling, while a specific technique, does not specifically highlight the rapid thrusting aspect that is central to needle manipulation. Therefore, understanding the context and application of needle manipulation within acupuncture helps clarify why it stands out as the correct choice for this question.