Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!" (Photos provided by the Tibetan forest fire authorities)

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"

Photos taken on April 18 show that the firefighters burst into smiles with ash on their faces after days of intensive operations to put out forest fires in Tibet. Netizens comment, "They look like they are wearing the most beautiful smoky-effect makeup around their eyes. You have been working hard!"