Most people will use their back of hand or wrist to test the temperature of milk for a baby. Well, we know that it is not an easy thing.

In recent news, Chongqing Jiaotong University has developed a smart milk stirring stick. With a length of approximately 20cm, this newly-invented smart milk stirring stick has a smart “breath light” on its top, which is able to tell temperatures by different colors such as red (above 60 degrees Celsius), orange (between 40 and 60 degrees Celsius), green (between 38 and 40 degrees Celsius) and blue (below 38 degrees Celsius).

When the “breath light” turns green, the temperature of milk will be appropriate for babies. (CQNEWS)