"The Righteous Alliance…" they all muttered as they looked at each other. Their gazes are talking.
Sun Rong has already left after telling them 'I don't know anything anymore'. Of course, they didn't stop him. Even if they all would beat him up, they know that he definitely wouldn't spill the beans, if there really were left.
"Why is it the Righteous Alliance?" they asked. Then, their gazes fell on Cheng Sheng who was sleeping on the couch.
They know that what Sun Rong said is right. Cheng Sheng definitely would tell Sun Rong the only 'safe' information. By 'safe', the information that Sun Rong can tell them. So that's why they didn't hold Sun Rong to stay and wring more information from him, since Sun Rong definitely doesn't know anything more. This is how wary Cheng Sheng is. If, and only if, Sun Rong or Qie Shi were caught by someone, the only information they would get would be the information Cheng Sheng deliberately released and nothing else.