ISRO did a great job with Chandrayaan-3, and now they are planning a new moon mission. They are going to work with Japan's space group, called JAXA, on this project. The mission's name is the Lunar Polar Exploration Mission, or LUPEX for short. People are also calling it Chandrayaan-4. LUPEX wants to find out if there is water on the moon's poles. In a few years, they will send a Japanese rocket to the moon with an Indian machine to land on it and a Japanese machine to drive around. ISRO will make the landing machine, and JAXA will make the rocket and driving machine.