My mobile phone suddenly received a short message, showing that I have a red envelope full of cash to collect and a link. Do you want to open it? Is it true?/You don't say.

It is recommended not to open it. Although not all links come from criminals, in order to reduce the risk, we should still ignore unfamiliar links of unknown origin, because some criminals will implant Trojan virus in short message links and then send them to mobile phone users through pseudo base stations, thus stealing users' bank cards or identity information.