A water supply project constructed using loans provided by China was launched Tuesday in the Philippines.

President Benigno Aquino III attended the ceremony, where he expressed gratitude to China.

The news sparked strong opposition back in China. Some thought it was a free donation to Manila and questioned the logic behind it.

The water supply project was built through the Preferential Buyer's Credit of China Export-Import Bank.

The Philippines borrowed from China to purchase construction products from a Chinese company, China International Water & Electric Corp. The $112 million loan is underwritten by the Philippine government.

Increasing exports by supplying loans is a popular way for big countries to expand overseas markets and influence. This is an arrangement that has mutual benefits.

The water supply project contract was signed in 2010. If it were negotiated today, given the current situation surrounding Huangyan Island, the deal would likely not go through.

China's capital is looking for overseas markets. But given its economic might, it has more leverage than the Philippines.

In fact, Beijing has many advantages in its overall relationship with Manila. China isn't the one that has been victimized in the new round of confrontations. Manila provoked the conflict, and also suffered the consequences.

China actually has more control over Huangyan Island. Now Manila has to rely more on external support from countries including the US. The Philippines grabbed a few islands in the South China Sea during the years when China's naval power was weaker. It was a grim lesson for China.

With its rising influence, and time on its side, China can generally be sure of resolving the South China Sea issue at its own pace despite disruptions from the US.

China can take its time facing waves in the South China Sea. It can take the Philippines as its friend, or as a small player in its grand diplomatic strategy.

If Manila plays foul, China can react with tough measures until Manila softens its stance. Nevertheless, it does not deserve too much attention from China.

Cooperation with the Philippines can still continue if it benefits China. But countries as fickle as the Philippines cannot become our strategic partners in a short period of time.

There is no need to dole out generous aid to the country. The cooperative project should be an opportunity for China to extend its advantage.

The South China Sea issue is bound to be a lengthy one. The powerful side will have more patience while the side with less leverage and confidence will easily become reckless.