Swallow's advance troops should have arrived. A few days ago, this swallow was found in Zhumadian, Hebi, Zhengzhou. Swallow has returned to its nest in Hebei province, and swallows have been found in all provinces in the Yangtze River basin. Swallows returned to the nest in the same place in Guangdong and Guangxi early, and there was also a time difference of half a month. If you like swallows, you can come to Jinyaoyan Bar to find an organization.