China’s $3 billion counter punch to Donald Trump’s tariffs is just the first move from the world’s second-largest economy. History suggests it won’t be the last.

The Commerce Ministry in Beijing said it will impose import taxes on the U.S., including a 25 percent tariff on U.S. pork imports and recycled aluminum, and 15 percent tariffs on American steel pipes, fruit and wine.

But that is only the tip of a long list of options if trade tensions with the U.S. worsen. Here’s a look at other ways China can strike back at America’s $130 billion of annual exports to China.

Aircraft

Chinese media have mentioned Boeing Co. as a key target in a trade war. President Xi Jinping gave Boeing a $38 billion order on a 2015 plant visit in Seattle, and China could retaliate by canceling those orders and shifting to Airbus, for example. There’s also the government procurement market, which China says is worth 3.1 trillion yuan ($490 billion). This is one option because China isn’t a signatory to the World Trade Organization’s rules on government procurement.

Agriculture

Farming is on the forefront of any trade war as it’s one of the few sectors where U.S. exporters run a surplus with China. China’s the biggest buyer of U.S. soybeans, taking $14.6 billion worth in the last marketing year—more than a third of the entire crop. Sorghum is also said to be on the hit list.

Tech

While the genesis of the latest U.S. measures against China are meant to protect American intellectual property and technology, that doesn’t mean Silicon Valley will be shielded from the crossfire. Apple Inc., Intel Corp. and Cisco Systems Inc. are among those vulnerable to a backlash.

Export Taxes

Another option is for China to impose special additional duties on locally made products exported to the U.S. Companies like Apple and other consumer goods and electronics giants would suffer if China imposes a duty on exported products. Such a move would hit U.S. companies and consumers hard, though it would also hurt Chinese firms.

Services/Education

The U.S. recorded a $38 billion services trade surplus with China in 2016. Some of the leading services exports from the U.S. to China include travel; IP, such as trademarks; and computer software, according to the U.S. Trade Representative’s Office. China could also restrict the number of students who go to U.S. universities.

Transactional diplomacy

China can quickly throw up non-tariff obstacles to trade, stepping up safety inspections and delaying paperwork essential for goods to make it into the country. It’s an under-the-radar approach China has often used to advance its geopolitical goals in Asia. They can also disrupt the operations of U.S. multinationals in China. That could include anything from actions by customs officials, financial regulators, quality inspectors, antitrust bodies, environmental authorities, consumer groups or economic planning bodies.

Yuan

The nuclear option would be a deliberate devaluation of the yuan to make China’s exports more competitive. Such a move would send shock waves through global markets, which is probably why it’s not an immediate lever that Beijing wants to pull.