Play Video 0:00 /1:20 ![](< data:image/svg+xml,%3csvg viewBox='0 0 14 14' version='1.1' xmlns:xlink='http://www.w3.org/1999/xlink' xmlns='http://www.w3.org/2000/svg'%3e %3cdesc%3eCreated with Lunacy%3c/desc%3e %3cpath d='M8.34343 0.471381C8.34343 0.754209 8.53199 0.942761 8.81481 0.942761L12.3973 0.942761L7.91919 5.42088C7.73064 5.60943 7.73064 5.89226 7.91919 6.08081C8.10774 6.26936 8.39057 6.26936 8.57912 6.08081L13.0572 1.60269L13.0572 5.18518C13.0572 5.46801 13.2458 5.65657 13.5286 5.65657C13.8114 5.65657 14 5.46801 14 5.18518L14 0.471381C14 0.188552 13.8114 0 13.5286 0L8.81481 0C8.53199 0 8.34343 0.188552 8.34343 0.471381C8.34343 0.754209 8.53199 0.942761 8.81481 0.942761L12.3973 0.942761L7.91919 5.42088C7.73064 5.60943 7.73064 5.89226 7.91919 6.08081C8.10774 6.26936 8.39057 6.26936 8.57912 6.08081L13.0572 1.60269L13.0572 5.18518C13.0572 5.46801 13.2458 5.65657 13.5286 5.65657C13.8114 5.65657 14 5.46801 14 5.18518L14 0.471381C14 0.188552 13.8114 0 13.5286 0L8.81481 0C8.53199 0 8.34343 0.188552 8.34343 0.471381ZM5.42088 7.91919L0.942761 12.3973L0.942761 8.81481C0.942761 8.53199 0.754209 8.34343 0.471381 8.34343C0.188552 8.34343 0 8.53199 0 8.81481L0 13.5286C0 13.8114 0.188552 14 0.471381 14L5.18518 14C5.46801 14 5.65657 13.8114 5.65657 13.5286C5.65657 13.2458 5.46801 13.0572 5.18518 13.0572L1.60269 13.0572L6.08081 8.57912C6.26936 8.39057 6.26936 8.10774 6.08081 7.91919C5.93939 7.73064 5.60943 7.73064 5.42088 7.91919L5.42088 7.91919L0.942761 12.3973L0.942761 8.81481C0.942761 8.53199 0.754209 8.34343 0.471381 8.34343C0.188552 8.34343 0 8.53199 0 8.81481L0 13.5286C0 13.8114 0.188552 14 0.471381 14L5.18518 14C5.46801 14 5.65657 13.8114 5.65657 13.5286C5.65657 13.2458 5.46801 13.0572 5.18518 13.0572L1.60269 13.0572L6.08081 8.57912C6.26936 8.39057 6.26936 8.10774 6.08081 7.91919C5.93939 7.73064 5.60943 7.73064 5.42088 7.91919L5.42088 7.91919Z' id='Shape' fill='%23FFFFFF' stroke='none' /%3e %3c/svg%3e>) ![](< data:image/svg+xml,%3csvg width='19px' height='14px' viewBox='0 0 19 14' version='1.1' xmlns:xlink='http://www.w3.org/1999/xlink' xmlns='http://www.w3.org/2000/svg'%3e %3cdesc%3eCreated with Lunacy%3c/desc%3e %3cg id='mute'%3e %3cpath d='M1.50744 0.757533C1.36162 0.568179 1.21566 0.378761 1.02117 0.227235L0.875346 0.113644C0.680828 -0.0378815 0.389078 -0.0378815 0.194559 0.113644C6.84731e-05 0.265149 6.84731e-05 0.492438 0.194559 0.643942L0.34038 0.757533C0.486337 0.871231 0.583569 0.984822 0.680828 1.13633L0.729417 1.17426C1.65337 2.27271 1.45885 3.25756 0.145889 4.35603C-0.0486296 4.50753 -0.0486296 4.73482 0.145889 4.88632C0.243148 4.96209 0.34038 5 0.486337 5C0.632157 5 0.729417 4.96209 0.826648 4.88632C2.43138 3.52268 2.67446 2.1212 1.50744 0.757533Z' transform='translate\(13.41176 4\)' id='Path' fill='%23FFFFFF' stroke='none' /%3e %3cpath d='M1.67473 0.487896C1.53133 0.32527 1.38795 0.203266 1.24446 0.121953C1.0532 -0.0406509 0.766327 -0.0406509 0.575064 0.121953C0.383828 0.284579 0.383828 0.528495 0.575064 0.691122L0.909815 0.975729C1.14883 1.26027 1.43572 1.50421 1.67473 1.82944C3.4916 4.14667 2.67747 6.45997 0.143427 8.69591C-0.0478091 8.85853 -0.0478091 9.10245 0.143427 9.26505C0.239059 9.34637 0.334691 9.38708 0.478179 9.38708C0.621559 9.38708 0.717191 9.34637 0.812822 9.26505C3.63373 6.78522 4.49575 4.02476 2.48759 1.42289C2.20072 1.05704 1.91383 0.772412 1.67473 0.487896Z' transform='translate\(14.52941 2\)' id='Path' fill='%23FFFFFF' stroke='none' /%3e %3cpath d='M9.41898 0.0965707C8.8931 -0.106724 8.22371 0.0152805 7.69783 0.421732L4.06404 3.06428L2.34277 3.06428C1.05189 3.06428 0 3.99928 0 5.05628L0 9.04031C0 10.1786 1.05189 11.0323 2.34277 11.0323L3.82503 11.0323L7.69783 13.6342C8.08022 13.8781 8.5106 14 8.8931 14C9.08434 14 9.32335 13.9594 9.46684 13.8781C9.99275 13.6748 10.2796 13.187 10.2796 12.5365L10.2796 1.47873C10.2796 0.828275 9.99275 0.299796 9.41898 0.0965707ZM9.32335 12.5772C9.32335 12.9024 9.22775 13.1057 9.03648 13.187C8.84522 13.2683 8.55835 13.187 8.27148 13.0244L4.15967 10.2599L2.34277 10.2599C1.57778 10.2599 0.956263 9.73146 0.956263 9.081L0.956263 5.09691C0.956263 4.44642 1.57778 3.91797 2.34277 3.91797L4.39868 3.91797L8.27148 1.11288C8.55835 0.909565 8.79747 0.828275 8.98873 0.909565C9.17997 0.990878 9.32335 1.23482 9.32335 1.56005L9.32335 12.5772Z' id='Fill-3' fill='%23FFFFFF' stroke='none' /%3e %3c/g%3e %3c/svg%3e>) 江西于都河是红军万里长征渡过的第一条河，被称为“长征第一渡”。 90多年前，八万六千多名红军集结于都，当时于都河宽600多米，这里没有一座现成的桥，八万六千多名红军如何过河？新华社记者带你揭秘长征出发前夜实现的那些“不可能”。 记者：李小卉 胡晨欢 黄浩然 新华社音视频部制作