To really enter a bear market you will need two factor. Pessimism and fundamentals to backup the pessimism.

There has been many sell off since 08 in the past due to negative news eg brexit, greece default, rate hike etc. But so far all those sell off later rebounded and achieve all time high again due to earning reports showing good result.

But this round is different as i think by 6 /12 months in you will see the full effect of the trade wars in earning reports. This kind of bad fundamental would likely tipped the market over to an official bear territory

The true trade war effects is not in the country numbers as per the article highlight. You need to look at how people will behave. When the media served as a scarecrow, and the situation played out is relatable to the general public, eg loss of job, slow down in orders, loss of contract etc. Even how small these impact really is, there is a likelihood it will set of a chain of larger effect, eg people will start delaying purchase of luxury items, a loss in appetite for further business capital investment, slow down in hiring etc. When all this come together, you will see in hard figure the economy has slowed and the future 6 / 12 months corporate earnings will reflect this. By that time stocks will be cheap, and if you have cash there is bound to be good bargain.

That said, my portfolio is still 70% in stocks, and i don't plan to withdraw it. To time the market is almost impossible, so for now i'm planning to limit my participation in the market until i see improving outlook on the company financials and that optimism for global growth is back on the table.

Just because these stocks shoot up doesn't mean anything.
P/E is relative. Healthy P/E should be around 10-15 but depends on industry. Expect Tech industry to be around 15-20.

Price shooting up but P/E 50+ could mean it was making loss in one of the quarter, highly speculative of future earnings (political stock) etc. Still overvalued in my opinion

Buying for short term then selling to lock in gains is not investing. More like trading.

I don't recall asking for proof. Maybe because the evidence wasn't delivered. I also believe majority of the stocks in Malaysia have fallen since that post.

Inb4, 3 month shows 50% gain but y-o-y shows 100% loss.

PE is historical data, and with economy slowing down and specific sector facing headwind, PE is not a good indicator.

As stock market is forward looking mechanism, while PE is looking at the past issue.

In fact, sometimes low PE can be a value trap. As some companies may report one off big disposal gain for the past year, which may not be recurrence in the future.