The US Navy has conducted similar actions many times in the past with the aim to implement so-called „freedom of navigation“ in the Taiwan Straits and the South China Sea, while as long as the US vessels follow the rules of „innocent passage“ to keep low profile and pose no harm, turn off weapons and fire-control radar system, and bring no actual threat to China‘s security, the PLA would just follow and monitor, said experts, noting that there is no big difference this time as the US also doesn‘t want to put its old warships in danger.