The goal of this clinical trial is to learn if Auricular acupuncture works to treat Insomnia Post-stroke patients. It will also learn about the safety of Auricular. The main questions it aims to answer are: * Does Auricular acupuncture reduce the time it took participants to fall asleep? * Dose Auricular acupuncture increase the number of hours participants slept? * Dose Auricular acupuncture improve sleep quality as measured by The Pittsburgh Sleep Quality Index (PSQI)? * What medical problems do participants have when taking Auricular acupuncture? Researchers will compare Auricular acupuncture to a sham Auricular acupuncture (a look-alike acupuncture needles that contains no needles) to see if Auricular acupuncture works to treat insomnia post-stroke. Participants will: * Take Auricular acupuncture or sham Auricular acupuncture every 5 days for 4 weeks. * Checkups and evaluate sleep onset time, sleep hours, and sleep quality every 5 days for 4 weeks. * Keep a diary sleep of their symptoms and the number of times they use sleeping pills.