In recent days, extreme high temperatures have swept across many European countries, with temperatures exceeding 40 degrees Celsius in many places. According to meteorological departments, this round of high temperatures will continue. Due to the high temperatures, many European countries have issued heat wave alerts recently. In the Serbian capital of Belgrade, the Macedonian capital of Skopje, and the Greek capital of Athens, the temperature has exceeded 40 degrees Celsius. In the southern Bosnian city of Mostar, boat floating projects have become more popular in high temperature weather.