Zhao Hai was dead, which means Li Huai was safe!
As for why no one had discovered this even after a whole night, it was likely that only Zhao Hai was arranged into the Public Security Bureau by the Xu and Xue families. After Zhao Hai's death, no one reported, and in order to avoid suspicion, people from Xu and Xue families didn't dare send anyone to check. Naturally, no one found out.
No, the informers of Xu and Xue families in the Public Security Bureau couldn't have been just Zhao Hai. Zhao Hai was merely the leader of a criminal police team; he didn't have the ability to manipulate the entire Public Security Bureau within his hands. There must have been a higher-ranking figure helping Xu and Xue families, but who that was, remained unknown for now.
Ling Fei believed that the most probable place for Li Huai to go after escaping would be the Liu Family.
Thus, along with Dongfang Wenjing and Liang Shi's people, she went to the Liu Family.