SHANGHAI, China - Charles Fulco, a middle school astronomy teacher, never thought he would come to China.

Pius Ye, 7, from Hong Kong, is currently in Shanghai to view the longest total solar eclipse of the 21st century.

But his passion for one of nature’s grandest spectacles compelled him to travel 7,000 miles from New York to Shanghai, to watch the longest total solar eclipse of the century.

"I'm getting goose bumps just thinking about it," says Fulco. “The last one I saw was 10 years ago and it’s like it happened yesterday."

Unfortunately, Mother Nature may have something very disappointing in store for him. Yes, forecasters in Shanghai are predicting rain.

The weather on the day of an eclipse is always a gamble, and it’s frustrating too. As the CNN team sent to Shanghai to cover the big event, we’re just as desperate to find a hole in the clouds as eclipse-chasers from around the world. We don’t want to miss it either.

So, we’ve consulted the experts, multiple tour groups, all with different strategies about how to beat the clouds. We've heard words like "air convection," "cloud count" and "land temperature" thrown around.

Fulco’s team is headed to Yangshan Island off the coast of Shanghai. The theory: The closer you are to a large body of water, the less dense cloud cover will be.

But others say being locked on an island is dangerous. The most important thing is mobility. So a group of MIT and Princeton alumni have chosen a spot on the Chinese mainland, along a manmade lake.

Yet a third group of 260 Americans with Sky and Telescope Magazine, are too difficult to keep up with. They seem to change their plans by the hour, determined to move in any direction last-minute, to ensure their view is not obscured. They are entertaining both coastal and inland options. When last we talked to them, they said would make their final decision after an intense discussion at dinner.

We’ve been warned about this kind of behavior. Veteran eclipse-chasers say if you change your plans too much, you risk missing the eclipse altogether.

Nevertheless, anxiety lingers as much as anticipation.

We’ve neared our final decision, but you’ll have to watch us live tomorrow morning (Shanghai time) to find out where we landed.