In a criminal case, is it necessary for a guardian to be present when a minor witness makes a statement?

According to Article 56 of the new Law on the Protection of Minors in People's Republic of China (PRC): "Public security organs and people's procuratorates shall notify guardians to be present when interrogating juvenile criminal suspects, juvenile witnesses and victims."

How to protect the legal rights of minors? Does the guardian have to be present in this case? How to determine the validity of interrogation without being present? Personally, I think this rule is still too general. What's the point of just "notifying" the presence? The implication is that it is legal for the guardian not to be present.

In view of ignorance of the law, how can guardians protect the rights of minors even when they are present? The provisions of Chinese laws on this system are often vague, without considering the application in practice. If the rights of guardians in this process are specified in detail, is it more conducive to the protection of juvenile suspects? Can lawyers participate in this process? If the guardian cannot be present, can representatives of other neutral institutions participate in the interrogation on his behalf?

From another angle, can lawyers participate in the interrogation activities of ordinary criminal suspects? Can it be guaranteed that lawyers can provide corresponding help as long as the suspects need it? These are all feasible. We need to fight for the rights of every citizen more, and everyone needs to participate, so that our laws can be more perfect and the rule of law can come earlier.