Hi Xijin's opinion piece on the Chinese missile silo story. Basically he is neither confirming nor denying that it's true or false. But he did lay out some facts to dig at the Washington Post.
It's unknown if the construction sites mentioned by the Washington Post are really silos for intercontinental ballistic missiles. But I must say that Lewis is an amateur. In reality, DF-41 is solid-fueled road-mobile intercontinental ballistic missile and one of its biggest advantages is its mobility and vitality. There is no point to put it inside a silo. Lewis may not understand the basic features of DF-41 before shooting off his mouth at the media.
Hu Xijin does not deny that silos do have a role to play in China's nuclear arsenal. They are for the larger, non-road mobile missiles like the DF-5. In fact silos are often built with decoys.
Silos are of course very important. They can store high-thrust liquid-fuel intercontinental missiles and carry higher-yield nuclear warheads. Silos are an important part of the nuclear power of major powers. China certainly has reasons to build them. However, real silos are often built at the same time as decoy silos. The actual distribution of silos is a top secret of nuclear powers.
Hu Xijin believes this Washington Post news is meant to scare monger to the world about China's nuclear arsenal. With that, the US hopes to put pressure on China to restraint its nuclear buildup. But China's (and every country's) nuclear force is supposed to be a top secret thing, so it's none of America's business!
I believe Washington Post produced the report in cooperation with US think tank with the aim to put pressure on China. It wanted to force China to issue a statement regarding its nuclear plan and squeeze the room for China's nuclear development through public opinion pressure. I suggest the Chinese side ignore this report and other similar reports in Western media. China should neither confirm nor deny such "revelation" and let the Western media imagine it. This is what nuclear deterrent means. By doing so China will smash any US attempt to suppress China's nuclear capacity building.