1. 2021年是辛丑年，属牛。根据五行学说，属牛人的五行属火或土，喜用金。因此，如果想在微信上展现招财转运、提升财运的氛围，可以考虑以下几种类型的微信头像：

1. The year 2021 is the Year of the Ox in the Xinxu year cycle. According to the theory of the Five Elements, people born in the year of the Ox belong to the elements of fire or earth, and are favorable in the element of metal. Therefore, if you want to create an atmosphere of wealth attraction and luck change on WeChat, you might consider the following types of WeChat profile pictures:

2. 红色头像：属牛人五行属火，红色代表热情、努力和进取心，也可以提升属牛人的财运。

2. Red avatar: People born in the Year of the Ox belong to the element of fire in the Five Elements. Red symbolizes passion, diligence, and ambition, and can also boost the Ox's wealth fortune.

3. 男生喜欢用超级酷的头像来做头像，证明这个男生一定是觉得这些很酷，很过这个男生一定是很喜欢时尚潮流的，这个男生也一定是年纪很小的，比如说十来岁的20来岁的男孩呢，就是这样走到，因为他们想要通过这几帅帅酷酷的头像来证明自己有多帅，他们现在这个年龄段呢，肯定是很喜欢女孩子的，眼睛是很想找女朋友的，所以他们就用头像来吸引女孩子证明自己舍友。用他的头像来告诉人家，这寝室长的很帅，很酷的。

3. Boys like to use super cool profile pictures, which proves that this boy must think these are very cool. This boy must be very fond of fashion trends, and he must also be quite young, like a boy in his early to mid-20s. It's like this as they want to prove their attractiveness through these handsome and cool profile pictures. At their current age, they must certainly be very interested in girls and eager to find a girlfriend. So, they use their profile pictures to attract girls and prove their worth. They use their profile pictures to tell others that the dorm leader is very handsome and cool.

4. 与金钱相关的头像：例如金币、钞票等，更能代表财富和富裕。总之，使用金色、红色或与金钱相关的头像皆可适合属牛人，提升财运。

4. Portraits related to money: such as gold coins, banknotes, etc., can better represent wealth and prosperity. In summary, using golden, red, or money-related portraits is suitable for the people born in the year of the Ox, and can boost their fortune.

5. 金色头像：金色代表财富和光辉，适合用在微信头像上，在五行学说中也代表五行中的金，可以提升属牛人的财运。

5. Golden Head portrait: Gold symbolizes wealth and luster, which is suitable for use as a WeChat avatar. In the Five Elements theory, it also represents the metal element among the five elements, and can enhance the fortune of those born in the year of the Ox.