it's time for me to summarise the chronological events of my purchase:
25th Aug - placed an order online (Legion 5 Pro 16ACH6 - Build Your Own, spec: RTX3050Ti, Ryzen 7 5800H, 1TB SSD, 16GB DDR4)
26th Aug till 30th Aug - checking and following up everyday with CS on why there's no order found in OVP

(the ORDER is NOT FOUND, pls do not mistaken with shipping date not updated)
31st Aug, morning -

escalated my unpleasant experience to CS and demand them to rectify on the same day. CS told me my order is stuck in the system due to Windows 10 Home version - don't ask me why
31st Aug, evening - my order is processed and went through. The order date changed to 31st instead of 25th
7th Sept - Expected shipment (30th Nov) and arrival date updated (7th Dec).
8th Sept, morning - I felt that the shipment date is taking too long so i requested for an earlier date via chatbot. (receive by 15th Oct)
8th Sept, late night - received an email stating my request is successful. New shipment date will be 26th Sept.
after that, perhaps it has become a habit that i check my status everyday. Heard many experienced shipment dates moving back and forth.
15th Sept, morning - my shipment date changed to 18th Sept!

I remained chill due to bad experiences of others on the dates.
16th Sept, today morning - my shipment date updated to today!

I remained chill still as I can't believe this is true.
Today afternoon - credit card notification that my card is charged. I thought this is just the routine charge as complained by others here.
Today evening - received email from lenovo stating my shipment is out, and i've been charged. Still couldn't believe, I checked the OVP.
So, it has been shipped!!!
Initially, it takes months to be shipped, and now it's just within 1 month! (as a consumer, I stand by my order date to be 25th Aug)
why? I dunno why...perhaps others cancelled their order, so they have chips available, or maybe they've recorded my 'escalated unpleasant experience' and I've been tagged as a difficult customer
anyway, I'll be getting my laptop A LOT sooner than expected
