The terrain at Gyirong Port has changed dramatically, with no visible outlines of buildings. Rescue teams are conducting a thorough search. What challenges are currently facing the rescue effort?

吉隆口岸地貌发生明显改变，已看不出任何建筑物轮廓，救援队进行拉网式排查搜救，目前救援面临哪些难点？

A public trend signal observed across 1 source.