Singapore suspected that he had faked his academic qualifications and forced him to get the original academic qualifications. Would it be impossible to sue him without the originals?

The poster does not know anything about Singapore’s review procedures. When you submit academic documents to apply for a visa, you usually submit copies, which means that in theory, you have the originals. If you tell Singapore Immigration now that you do not have the original documents, it will immediately reveal that your documents are fake. The Singapore Immigration Service will immediately reject your visa application. If someone has come to Singapore to work with false documents, the Singapore Immigration Bureau may prosecute him at its discretion.

"The Xuexin website for those who graduated in 1999 cannot be found" - Your statement completely exposes your ignorance of how to verify the authenticity of documents in Singapore. The Singapore Immigration Bureau will -

1) directly contact the principal of the school to confirm the authenticity of the diploma; if the school does not currently exist

2) will directly contact the Chinese Ministry of Education to confirm whether the school It once existed. If it ever existed, it can be traced to see if the document is fake. If the school never existed, then the documents are fake.