The trio might have been refined by the Red Radiance Jades and Blue Origin Crystals, but they were still heavily injured and had crawled through underground tunnels for three days and three nights while starving. Their bodies were drained and they suffered from all sorts of different sequelae.
Meng Chao was in the best condition. He was just hungry, and after he was injected with a nutritional fluid that had ten times more calories than what a normal superhuman would take, he slowly recovered.
As a Spirit Sensor, Lu Siya's spirit energy sensitivity had been magnified several times, which meant that she was now too sensitive to spirit energy. It was just like how a person's brain would not be able to handle a gigantic amount of information flooding into it if their vision and hearing became ten times better than before.