During COVid era- 2020 to 2022, most China citizens were not allowed to leave China as lockdown was imposed. Our Casinos still survived.
China is a sovereign nation & have their own laws. Singapore is a sovereign nation & have our own laws. China is NOT Singapore, & Singapore is NOT China.
As for money laundering, it is Worldwide. Wild allegations & accusations without any evidences are also a form of MIND CONTROL - tearing down of Institutions & Public Trust.
If any citizen has any CREDIBLE information on such crimes, Do contact the Authorities - Min of Law Anti Money laundering Division, or SPF Suspicious Transaction Reporting Office.