2, because the river rice will be more soaked more viscous, the longer the soaking time, the package of rice dumplings will be more delicious. The correct way to wrap the dumplings with rice is to submerge the rice in water, change the water a few times a day, and it is best to soak it for a few days, or at least three hours if you don't have time. It should be noted that the soaking of the river rice must be submerged, because as long as you insist on changing the water every day, the river rice will not deteriorate in a short period of time, but the amount of water must be sufficient, otherwise, the river rice absorbs enough water after exposure to the air, will lead to the rice grain chalking, so that the chalked river rice can not be made out of a good taste of the rice dumplings.