Chery a3 changed the thermostat. What happened to the temperature?

I changed the thermostat, which used to be a little over 70, but now it can reach the line of nearly 90 degrees, so I changed it. Is it not good?

Take a taxi in the morning and pay attention to your water temperature. Just after 50 and less than 70, the thermostat is connected to the big thick pipe of the water tank. If it is cold, the thermostat is in good condition. It's hot if it doesn't exceed 70. This means that the thermostat leaks. Keep changing.