A 10-year investment period gives investors time to think beyond the next market wobble.
With $20,000, ASX exchange traded funds (ETFs) can provide exposure to global quality companies, robotics and artificial intelligence, and China's consumer and technology economy.
Here are three ASX ETFs that could be top long-term picks.

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Betashares Global Quality Leaders ETF (ASX: QLTY)
The Betashares Global Quality Leaders ETF could be worth considering.
This ASX ETF is designed to provide exposure to global companies with quality characteristics. That can include strong profitability, solid balance sheets, and earnings that have shown a degree of resilience over time.
The idea is not to chase the most exciting theme in the market. It is to own companies that have already proven they can make money at a high level and keep doing so through different conditions.
That can be important over a 10-year period because markets never move in a straight line. There will be recessions, inflation scares, rate changes, earnings downgrades, and plenty of volatility along the way.
A quality-focused fund can help anchor the portfolio with businesses that have the financial strength to keep investing, defend margins, and compound over time. It was recently recommended by the team at Betashares.
Betashares Global Robotics and Artificial Intelligence ETF (ASX: RBTZ)
Another ASX ETF to look at is the Betashares Global Robotics and Artificial Intelligence ETF.
This fund gives investors exposure to companies involved in robotics, automation, artificial intelligence, drones, unmanned vehicles, and related technologies. That makes it a more targeted growth holding.
The long-term case is tied to how work is changing. Factories, warehouses, hospitals, farms, logistics networks, and transport systems are all looking for ways to become more efficient, precise, and automated.
Robotics is not just about humanoid machines. It can include industrial equipment, sensors, robotic surgery tools, autonomous systems, and the software that helps machines make better decisions.
Artificial intelligence could increase the opportunity by making machines more capable in real-world settings.
This ASX ETF is likely to be volatile, but as a 10-year holding, it gives the portfolio exposure to a powerful structural theme. It was also recently recommended by analysts at Betashares.
VanEck China New Economy ETF (ASX: CNEW)
The final ASX ETF to look at is the VanEck China New Economy ETF.
This is arguably the higher-risk idea in the group.
The fund gives investors exposure to Chinese companies linked to areas such as consumer spending, healthcare, technology, industrial innovation, and other parts of the country's changing economy.
Over a 10-year period, China's middle class, domestic consumption, healthcare needs, digital services, and advanced manufacturing ambitions could still create strong investment opportunities.
This fund gives investors a way to access that potential without trying to pick individual Chinese shares. It was recently recommended by analysts at VanEck.