In relation to the horrific slaughter case of Mdm Choi which captured the World's attention, perhaps do allow the insignificant nobody me to elaborate upon how property money laundering schemes can be administered, by an example.
Mdm Chan is a wife of a China General from the 321st Armored Brigade in China. She bought a $10million property in Singapore. Lawyers doing DUE DILIGENCE can only do so within the laws of Singapore, & information about Mdm Chan is almost impossible to obtain, as China is a sovereign nation with its own laws & is restrictive on information flow, more so national officials. Thus, the lawyers did their job, as Mdm Chan had the necessary purchase for a 'clean' purchase - cash, stamp duties taxes, etc, even without any loans from banks, & completed the sale within less than 2mths, & PROOF of record on the purchase.
With such recorded purchase DOCUMENTS, she proceeded to obtain a Tenancy agreement, stamped & verified by IRAS, using probably a relative or friend's name on the document paid with commission - $1000 or more to remain silent - free money to those desperate enough, & to NEVER ever step into the property to make a claim.
Then every month, she will cover her face - hijab or glasses/mask, to remit the fake rent of $10,000/mth cash from her bag into her own different account at an ATM or thru a friend, eg - $10,000. Should the banks be aware of such transactions, she will have documentary PROOF of her purchase & tenancy agreement to vouch for such amounts, & will pass bank scrutiny, either in China or Spore.
With that amount in her bank account & verified as legitimate, she can use it for her family's expenses - groceries, cars, kids education in Harvard Uni, etc & even extravagant lifestyle beyond that of what a China General would even imagine to earn per month, & flaunt such wealth with no suspicion from the authorities, as such funds are legitimate & proven. At the end of 10yrs, she would sell the property, & then use all those money earned for legitimate purposes - fix deposits, create lucrative legitimate companies such as microchips, logistics, etc, to grow her once illegitimate funds into legititamacy.
Even if China tax officials are suspicious, call her up for an interview, she would have the documents to show legitimate proof of her earnings, even to the extent of where her original wealth came from which can be easily accepted as inheritance, dowry, hard savings, etc. Furthermore, being the wife of a military General, whom moved within the circles of power, no mere China tax accountant would dare offend her, as they would worry about their own job & careers, as just mere words from her to her husband's powerful circle would end their career or be assigned to some far forsaken land in China.
Instead, they may send her a personal letter of apology for the inconvenience caused, in the hope to ingrate themselves to powerful persons for personal career rise, unaware that they are FAR more needed by her than her to them. It never hurts to gain a friend with benefits, as they are know the rules, regulations & nuances to the corruption laws, & will be used & abuse at will, invited to private parties, to promote them to higher positions with higher benefits to their criminal causes. That's how corruption works & why PrezXi is hell bent to end it as it will cause the downfall of China.
Within the slaughter of mdm Choi's case, which had been played up as a family dispute over property sale issue, should it be over a case of hidden money laundering issue, I would offer this hypothesis:-
Mdm Choi was no longer the bright starry eye youth at 18 with Cinderella dreams. By 28yrs old, far more matured with 4 kids, she woke up to realities, more so with contacts with the outside world. She wanted out of the criminal money laundering circle - sell the property, for her own salvation & that of the future of her innocent kids.
However, the property in dispute had been earning & washing laundered money successfully for years, & none of the players & even the background Principles - those whom funded the property - want it to end. Despite appeals & pressure from all her in laws whom are only the low level middlemen in the money laundering circle, & even last minute appeals by her ex husband Alex to drop the idea as it may endanger herself to the Principles, she remained steadfast, come what may, to end the criminality cycle in her life & her next generations. Thus her untimely end, to stop her by making her disappear... by WHOM, still unknown as TRUE evidences are sadly missing...