And about Elon Musk.
His birth time is not really known - but in astro.com there is a guessed time at 7.30 am. Rodden rating B, which is not reliable. But if we go with that time, then his hour pillar is Wu-Chen and Chen is his Golden Carriage.
bazi-calculator.com says that there is a hidden triangular combination between Chen and Shen (although Zi is missing from that). He's deemed as a weak Jia DM from that calculator. So perhaps he needs strength from his luck pillars to acquire wealth? If he has the Wu-Chen hour pillar, he does have a lot of wealth in late career and it doesn't surprise me if his children pillar has that Golden Carriage... it's very unusual that modern day people in the western world have so many children.
Elon Musk became a billionaire in 2012 at the age of 41, when the value of Tesla stock surged, leading to his first appearance on the Forbes Billionaires List with a net worth of $2 billion.
His path to wealth began earlier:
In 1999, he became a multi-millionaire at age 27 after selling his first company, Zip2, for $307 million, earning him $22 million.
In 2002, he became a centi-millionaire (over $100 million) after eBay acquired PayPal (which evolved from his company X.com) for $1.5 billion, earning him $175 million.
While these events made him very wealthy, it was the success and rising stock price of Tesla that officially propelled him into billionaire status in 2012.
In 1999 he was in his Xin-Mao LP (Mao is activation to Golden Carriage). It is Ji-Mao year, so Ji-Jia combination into earth. There is a Hai-Mao half combo to wood, Wu-Mao destruction and Chen-Mao half combo to wood and "activation". So this is strength to his DM with all that wood.
In 2002 he's still in Xin-Mao LP, but it's a Ren-Wu year.
In 2012, billionaire status, we have a Ren-Chen year in Geng-Yin LP. Both are interacting with his Chen Golden Carriage hour branch and there's also the Yin-Hai wood combo to give him strength.
That LP also forms the "three heavenly nobleman" structure in his chart if hour pillar is correct, Wu-Jia-Geng.
He's currently in his Ji-Chou LP, full of earth and he's going into his Wu-Zi LP in 2028 which has that indirect wealth on the stem and that will be a full hidden triangular combination of Chen-Zi-Shen, again a positive activation to his Golden Carriage and Zi water feeding his DM.
I don't know how to spot a special kind of Bazi - so I don't know if there's a lot more to his chart... but these are the basics I see.
I'd like to add that if this hour pillar is right, then he has conception pillar as Yi-You and his life pillar/ming-gong as Yi-Wei. So if we take that into account his life pillar is wood sitting on earth and the Wei branch possibly interacts with the destiny when he's going through his Xin-Mao LP to become rich (Hai-Mao-Wei full wood frame).
Please let us know if Bazi specialists are seeing much more to these charts.