Director of Zoo Berlin Andreas Knieriem (C) and experts from Germany's Leibniz Institute for Zoo and Wildlife Research attend a press conference at the Zoo Berlin in Berlin, capital of Germany, on Aug. 14, 2019. Zoo Berlin is getting ready to welcome one or two newborn panda cubs as experts say it's very likely that the 6-year-old panda Meng Meng is pregnant. (Xinhua/Shan Yuqi)