Last Thursday, the Ministry of Environment released a guidebook on "K-taxonomy," presenting principles and standards concerning environmentally-friendly economic activity. It refers to the government's certification of eco-friendly activities - a set of guidelines to induce capital flows into green investment and finance and prompt the substantive transformation of society to cope with the climate crisis. The exclusion of nuclear energy, which cannot be called a form of green energy, from the taxonomy guidebook was natural in this regard. However, the inclusion of liquefied natural gas (LNG), which produces lots of greenhouse gases to produce and transport, is worrying as it could give the wrong signal.