Rice grains in the nose can be expelled directly by blowing your nose or snorting backwards, and in some cases may need to be removed by rinsing the nasal passages or endonasal endoscopy.
When you get a grain of rice in your nose, you can usually try to hold your breath, exhale through your nose, and blow the grain out by blowing your nose. However, if the rice is in the back of the nose and you cannot blow it out hard enough, you can try sniffing backwards.
If this does not work, you may need to work with your doctor to expel the rice by rinsing the nasal passages repeatedly with saline. You may also want to consider removing the rice particles with an anterior rhinoscope or endonasal endoscopy.
If the rice particles cannot be discharged on their own after entering the nasal cavity, you should go to the hospital in time and cooperate with the doctor to take the correct and appropriate way to deal with the problem.